[c++14] absl::make_unique --> std::make_unique (#31159)

* [c++14] absl::make_unique --> std::make_unique

* fix

* fix

BUILD

@@ -910,10 +910,7 @@ grpc_cc_library(
         "include/grpcpp/security/alts_context.h",
         "include/grpcpp/security/alts_util.h",
     ],
-    external_deps = [
+    external_deps = ["upb_lib"],
-        "absl/memory",
-        "upb_lib",
-    ],
     language = "c++",
     standalone = True,
     visibility = ["@grpc:tsi"],
@@ -1902,7 +1899,6 @@ grpc_cc_library(
     ],
     external_deps = [
         "absl/base:core_headers",
-        "absl/memory",
         "absl/status",
         "absl/strings",
         "absl/types:optional",
@@ -1938,7 +1934,6 @@ grpc_cc_library(
     ],
     external_deps = [
         "absl/base:core_headers",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -2535,7 +2530,6 @@ grpc_cc_library(
     ],
     external_deps = [
         "absl/base:core_headers",
-        "absl/memory",
         "absl/time",
         "absl/types:optional",
     ],
@@ -2620,7 +2614,6 @@ grpc_cc_library(
         "src/core/lib/event_engine/posix_engine/wakeup_fd_pipe.h",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -2641,7 +2634,6 @@ grpc_cc_library(
         "src/core/lib/event_engine/posix_engine/wakeup_fd_eventfd.h",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -2686,7 +2678,6 @@ grpc_cc_library(
         "absl/base:core_headers",
         "absl/container:inlined_vector",
         "absl/functional:function_ref",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -3365,7 +3356,6 @@ grpc_cc_library(
         "absl/container:inlined_vector",
         "absl/functional:any_invocable",
         "absl/functional:function_ref",
-        "absl/memory",
         "absl/meta:type_traits",
         "absl/status",
         "absl/status:statusor",
@@ -3584,7 +3574,6 @@ grpc_cc_library(
         "src/core/lib/service_config/service_config_impl.h",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -3634,7 +3623,6 @@ grpc_cc_library(
         "src/core/lib/resolver/server_address.h",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -3899,7 +3887,6 @@ grpc_cc_library(
     external_deps = [
         "absl/base:core_headers",
         "absl/container:inlined_vector",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -4006,7 +3993,6 @@ grpc_cc_library(
     ],
     external_deps = [
         "absl/base:core_headers",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/types:optional",
@@ -4164,7 +4150,6 @@ grpc_cc_library(
         "src/core/ext/filters/message_size/message_size_filter.h",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -4203,7 +4188,6 @@ grpc_cc_library(
     ],
     external_deps = [
         "absl/base:core_headers",
-        "absl/memory",
         "absl/random",
         "absl/status",
         "absl/status:statusor",
@@ -4241,7 +4225,6 @@ grpc_cc_library(
         "src/core/ext/filters/rbac/rbac_service_config_parser.h",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -4358,7 +4341,6 @@ grpc_cc_library(
     external_deps = [
         "absl/base:core_headers",
         "absl/container:inlined_vector",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -4433,7 +4415,6 @@ grpc_cc_library(
     external_deps = [
         "absl/base:core_headers",
         "absl/hash",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -4830,10 +4811,7 @@ grpc_cc_library(
     srcs = [
         "src/core/lib/security/credentials/channel_creds_registry_init.cc",
     ],
-    external_deps = [
+    external_deps = ["absl/strings"],
-        "absl/memory",
-        "absl/strings",
-    ],
     language = "c++",
     deps = [
         "channel_creds_registry",
@@ -4875,7 +4853,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/lb_policy/xds/cds.cc",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -4925,7 +4902,6 @@ grpc_cc_library(
     hdrs = [
         "src/core/ext/filters/client_channel/lb_policy/xds/xds.h",
     ],
-    external_deps = ["absl/memory"],
     language = "c++",
     deps = [
         "gpr_platform",
@@ -4941,7 +4917,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/lb_policy/xds/xds_cluster_resolver.cc",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -4989,7 +4964,6 @@ grpc_cc_library(
     ],
     external_deps = [
         "absl/base:core_headers",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -5032,7 +5006,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/lb_policy/xds/xds_cluster_manager.cc",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -5078,7 +5051,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/lb_policy/address_filtering.h",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status:statusor",
         "absl/strings",
     ],
@@ -5120,7 +5092,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -5158,7 +5129,6 @@ grpc_cc_library(
     external_deps = [
         "absl/base:core_headers",
         "absl/container:inlined_vector",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -5200,7 +5170,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -5249,7 +5218,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/lb_policy/outlier_detection/outlier_detection.cc",
     ],
     external_deps = [
-        "absl/memory",
         "absl/random",
         "absl/status",
         "absl/status:statusor",
@@ -5293,7 +5261,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/lb_policy/priority/priority.cc",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -5336,7 +5303,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/lb_policy/weighted_target/weighted_target.cc",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -5588,7 +5554,6 @@ grpc_cc_library(
     ],
     external_deps = [
         "absl/functional:bind_front",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -5632,7 +5597,6 @@ grpc_cc_library(
     external_deps = [
         "absl/base:core_headers",
         "absl/container:flat_hash_set",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -5680,7 +5644,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status:statusor",
         "absl/strings",
     ],
@@ -5704,7 +5667,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/resolver/binder/binder_resolver.cc",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -5729,7 +5691,6 @@ grpc_cc_library(
     hdrs = ["src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h"],
     external_deps = [
         "absl/base:core_headers",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -5775,7 +5736,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/resolver/xds/xds_resolver.cc",
     ],
     external_deps = [
-        "absl/memory",
         "absl/meta:type_traits",
         "absl/random",
         "absl/status",
@@ -5824,7 +5784,6 @@ grpc_cc_library(
         "src/core/ext/filters/client_channel/resolver/google_c2p/google_c2p_resolver.cc",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -6229,7 +6188,6 @@ grpc_cc_library(
         "absl/base:core_headers",
         "absl/container:inlined_vector",
         "absl/functional:bind_front",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -6400,7 +6358,6 @@ grpc_cc_library(
         "src/core/lib/security/credentials/external/url_external_account_credentials.h",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -6500,7 +6457,6 @@ grpc_cc_library(
     external_deps = [
         "absl/base:core_headers",
         "absl/container:inlined_vector",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -6714,7 +6670,6 @@ grpc_cc_library(
         "src/core/lib/security/authorization/mock_cel/flat_expr_builder.h",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -6737,7 +6692,6 @@ grpc_cc_library(
         "src/core/lib/matchers/matchers.h",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -6763,7 +6717,6 @@ grpc_cc_library(
         "src/core/lib/security/authorization/rbac_policy.h",
     ],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -6794,7 +6747,6 @@ grpc_cc_library(
     ],
     external_deps = [
         "absl/base:core_headers",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -6848,7 +6800,6 @@ grpc_cc_library(
     ],
     external_deps = [
         "absl/container:flat_hash_set",
-        "absl/memory",
         "absl/strings",
         "absl/types:optional",
         "absl/types:span",
@@ -7112,7 +7063,6 @@ grpc_cc_library(
     ],
     external_deps = [
         "absl/base:core_headers",
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -7466,7 +7416,6 @@ grpc_cc_library(
         "src/cpp/server/orca/orca_interceptor.h",
     ],
     external_deps = [
-        "absl/memory",
         "absl/strings",
         "absl/types:optional",
     ],

src/core/ext/filters/client_channel/client_channel.cc

@@ -27,7 +27,6 @@
 #include <set>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/cord.h"
@@ -1328,7 +1327,7 @@ void ClientChannel::OnResolverErrorLocked(absl::Status status) {
     // Update connectivity state.
     UpdateStateAndPickerLocked(
         GRPC_CHANNEL_TRANSIENT_FAILURE, status, "resolver failure",
-        absl::make_unique<LoadBalancingPolicy::TransientFailurePicker>(status));
+        std::make_unique<LoadBalancingPolicy::TransientFailurePicker>(status));
   }
 }
 
@@ -1368,7 +1367,7 @@ OrphanablePtr<LoadBalancingPolicy> ClientChannel::CreateLbPolicyLocked(
   LoadBalancingPolicy::Args lb_policy_args;
   lb_policy_args.work_serializer = work_serializer_;
   lb_policy_args.channel_control_helper =
-      absl::make_unique<ClientChannelControlHelper>(this);
+      std::make_unique<ClientChannelControlHelper>(this);
   lb_policy_args.args = args;
   OrphanablePtr<LoadBalancingPolicy> lb_policy =
       MakeOrphanable<ChildPolicyHandler>(std::move(lb_policy_args),
@@ -1502,13 +1501,13 @@ void ClientChannel::CreateResolverLocked() {
   }
   resolver_ = CoreConfiguration::Get().resolver_registry().CreateResolver(
       uri_to_resolve_.c_str(), channel_args_, interested_parties_,
-      work_serializer_, absl::make_unique<ResolverResultHandler>(this));
+      work_serializer_, std::make_unique<ResolverResultHandler>(this));
   // Since the validity of the args was checked when the channel was created,
   // CreateResolver() must return a non-null result.
   GPR_ASSERT(resolver_ != nullptr);
   UpdateStateAndPickerLocked(
       GRPC_CHANNEL_CONNECTING, absl::Status(), "started resolving",
-      absl::make_unique<LoadBalancingPolicy::QueuePicker>(nullptr));
+      std::make_unique<LoadBalancingPolicy::QueuePicker>(nullptr));
   resolver_->StartLocked();
   if (GRPC_TRACE_FLAG_ENABLED(grpc_client_channel_trace)) {
     gpr_log(GPR_INFO, "chand=%p: created resolver=%p", this, resolver_.get());
@@ -1714,7 +1713,7 @@ void ClientChannel::StartTransportOpLocked(grpc_transport_op* op) {
       disconnect_error_ = op->disconnect_with_error;
       UpdateStateAndPickerLocked(
           GRPC_CHANNEL_SHUTDOWN, absl::Status(), "shutdown from API",
-          absl::make_unique<LoadBalancingPolicy::TransientFailurePicker>(
+          std::make_unique<LoadBalancingPolicy::TransientFailurePicker>(
               grpc_error_to_absl_status(op->disconnect_with_error)));
     }
   }

src/core/ext/filters/client_channel/health/health_check_client.cc

@@ -25,7 +25,6 @@
 #include <memory>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/string_view.h"
@@ -165,7 +164,7 @@ OrphanablePtr<SubchannelStreamClient> MakeHealthCheckClient(
     RefCountedPtr<ConnectivityStateWatcherInterface> watcher) {
   return MakeOrphanable<SubchannelStreamClient>(
       std::move(connected_subchannel), interested_parties,
-      absl::make_unique<HealthStreamEventHandler>(std::move(service_name),
+      std::make_unique<HealthStreamEventHandler>(std::move(service_name),
                                                  std::move(channelz_node),
                                                  std::move(watcher)),
       GRPC_TRACE_FLAG_ENABLED(grpc_health_check_client_trace)

src/core/ext/filters/client_channel/lb_policy/address_filtering.cc

@@ -23,7 +23,6 @@
 #include <algorithm>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/str_join.h"
 
@@ -41,7 +40,7 @@ class HierarchicalPathAttribute : public ServerAddress::AttributeInterface {
       : path_(std::move(path)) {}
 
   std::unique_ptr<AttributeInterface> Copy() const override {
-    return absl::make_unique<HierarchicalPathAttribute>(path_);
+    return std::make_unique<HierarchicalPathAttribute>(path_);
   }
 
   int Cmp(const AttributeInterface* other) const override {
@@ -70,7 +69,7 @@ class HierarchicalPathAttribute : public ServerAddress::AttributeInterface {
 
 std::unique_ptr<ServerAddress::AttributeInterface>
 MakeHierarchicalPathAttribute(std::vector<std::string> path) {
-  return absl::make_unique<HierarchicalPathAttribute>(std::move(path));
+  return std::make_unique<HierarchicalPathAttribute>(std::move(path));
 }
 
 absl::StatusOr<HierarchicalAddressMap> MakeHierarchicalAddressMap(
@@ -89,7 +88,7 @@ absl::StatusOr<HierarchicalAddressMap> MakeHierarchicalAddressMap(
     ++it;
     if (it != path.end()) {
       std::vector<std::string> remaining_path(it, path.end());
-      new_attribute = absl::make_unique<HierarchicalPathAttribute>(
+      new_attribute = std::make_unique<HierarchicalPathAttribute>(
           std::move(remaining_path));
     }
     target_list.emplace_back(address.WithAttribute(

src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc

@@ -69,7 +69,6 @@
 #include <vector>
 
 #include "absl/container/inlined_vector.h"
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -340,7 +339,7 @@ class GrpcLb : public LoadBalancingPolicy {
           client_stats_(std::move(client_stats)) {}
 
     std::unique_ptr<AttributeInterface> Copy() const override {
-      return absl::make_unique<TokenAndClientStatsAttribute>(lb_token_,
+      return std::make_unique<TokenAndClientStatsAttribute>(lb_token_,
                                                             client_stats_);
     }
 
@@ -707,7 +706,7 @@ ServerAddressList GrpcLb::Serverlist::GetServerAddressList(
     std::map<const char*, std::unique_ptr<ServerAddress::AttributeInterface>>
         attributes;
     attributes[kGrpcLbAddressAttributeKey] =
-        absl::make_unique<TokenAndClientStatsAttribute>(std::move(lb_token),
+        std::make_unique<TokenAndClientStatsAttribute>(std::move(lb_token),
                                                        stats);
     // Add address.
     addresses.emplace_back(addr, ChannelArgs(), std::move(attributes));
@@ -762,7 +761,7 @@ GrpcLb::PickResult GrpcLb::Picker::Pick(PickArgs args) {
     GrpcLbClientStats* client_stats = subchannel_wrapper->client_stats();
     if (client_stats != nullptr) {
       complete_pick->subchannel_call_tracker =
-          absl::make_unique<SubchannelCallTracker>(
+          std::make_unique<SubchannelCallTracker>(
               client_stats->Ref(),
               std::move(complete_pick->subchannel_call_tracker));
       // The metadata value is a hack: we pretend the pointer points to
@@ -852,7 +851,7 @@ void GrpcLb::Helper::UpdateState(grpc_connectivity_state state,
   }
   parent_->channel_control_helper()->UpdateState(
       state, status,
-      absl::make_unique<Picker>(std::move(serverlist), std::move(picker),
+      std::make_unique<Picker>(std::move(serverlist), std::move(picker),
                                std::move(client_stats)));
 }
 
@@ -1566,7 +1565,7 @@ absl::Status GrpcLb::UpdateLocked(UpdateArgs args) {
     for (ServerAddress& address : *fallback_backend_addresses_) {
       address = address.WithAttribute(
           kGrpcLbAddressAttributeKey,
-          absl::make_unique<TokenAndClientStatsAttribute>("", nullptr));
+          std::make_unique<TokenAndClientStatsAttribute>("", nullptr));
     }
   }
   resolution_note_ = std::move(args.resolution_note);
@@ -1777,7 +1776,7 @@ OrphanablePtr<LoadBalancingPolicy> GrpcLb::CreateChildPolicyLocked(
   LoadBalancingPolicy::Args lb_policy_args;
   lb_policy_args.work_serializer = work_serializer();
   lb_policy_args.args = args;
-  lb_policy_args.channel_control_helper = absl::make_unique<Helper>(Ref());
+  lb_policy_args.channel_control_helper = std::make_unique<Helper>(Ref());
   OrphanablePtr<LoadBalancingPolicy> lb_policy =
       MakeOrphanable<ChildPolicyHandler>(std::move(lb_policy_args),
                                          &grpc_lb_glb_trace);
@@ -1912,7 +1911,7 @@ class GrpcLbFactory : public LoadBalancingPolicyFactory {
 namespace grpc_core {
 void RegisterGrpcLbPolicy(CoreConfiguration::Builder* builder) {
   builder->lb_policy_registry()->RegisterLoadBalancingPolicyFactory(
-      absl::make_unique<GrpcLbFactory>());
+      std::make_unique<GrpcLbFactory>());
   builder->channel_init()->RegisterStage(
       GRPC_CLIENT_SUBCHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY,
       [](ChannelStackBuilder* builder) {

src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.cc

@@ -22,8 +22,6 @@
 
 #include <string.h>
 
-#include "absl/memory/memory.h"
-
 #include <grpc/support/atm.h>
 #include <grpc/support/string_util.h>
 
@@ -54,7 +52,7 @@ void GrpcLbClientStats::AddCallDropped(const char* token) {
   // Record the drop.
   MutexLock lock(&drop_count_mu_);
   if (drop_token_counts_ == nullptr) {
-    drop_token_counts_ = absl::make_unique<DroppedCallCounts>();
+    drop_token_counts_ = std::make_unique<DroppedCallCounts>();
   }
   for (size_t i = 0; i < drop_token_counts_->size(); ++i) {
     if (strcmp((*drop_token_counts_)[i].token.get(), token) == 0) {

src/core/ext/filters/client_channel/lb_policy/oob_backend_metric.cc

@@ -27,7 +27,6 @@
 #include <vector>
 
 #include "absl/base/thread_annotations.h"
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/strings/string_view.h"
 #include "absl/types/optional.h"
@@ -348,7 +347,7 @@ void OrcaProducer::MaybeStartStreamLocked() {
   if (connected_subchannel_ == nullptr) return;
   stream_client_ = MakeOrphanable<SubchannelStreamClient>(
       connected_subchannel_, subchannel_->pollset_set(),
-      absl::make_unique<OrcaStreamEventHandler>(WeakRef(), report_interval_),
+      std::make_unique<OrcaStreamEventHandler>(WeakRef(), report_interval_),
       GRPC_TRACE_FLAG_ENABLED(grpc_orca_client_trace) ? "OrcaClient" : nullptr);
 }
 
@@ -410,7 +409,7 @@ void OrcaWatcher::SetSubchannel(Subchannel* subchannel) {
 std::unique_ptr<SubchannelInterface::DataWatcherInterface>
 MakeOobBackendMetricWatcher(Duration report_interval,
                             std::unique_ptr<OobBackendMetricWatcher> watcher) {
-  return absl::make_unique<OrcaWatcher>(report_interval, std::move(watcher));
+  return std::make_unique<OrcaWatcher>(report_interval, std::move(watcher));
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/lb_policy/oob_backend_metric.h

@@ -38,7 +38,7 @@ namespace grpc_core {
 // subchannel like this:
 //   subchannel->AddDataWatcher(
 //       MakeOobBackendMetricWatcher(
-//           absl::make_unique<MyOobBackendMetricWatcherSubclass>(...)));
+//           std::make_unique<MyOobBackendMetricWatcherSubclass>(...)));
 
 class OobBackendMetricWatcher {
  public:

src/core/ext/filters/client_channel/lb_policy/outlier_detection/outlier_detection.cc

@@ -32,7 +32,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/random/random.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
@@ -307,8 +306,8 @@ class OutlierDetectionLb : public LoadBalancingPolicy {
     }
 
    private:
-    std::unique_ptr<Bucket> current_bucket_ = absl::make_unique<Bucket>();
+    std::unique_ptr<Bucket> current_bucket_ = std::make_unique<Bucket>();
-    std::unique_ptr<Bucket> backup_bucket_ = absl::make_unique<Bucket>();
+    std::unique_ptr<Bucket> backup_bucket_ = std::make_unique<Bucket>();
     // The bucket used to update call counts.
     // Points to either current_bucket or active_bucket.
     std::atomic<Bucket*> active_bucket_{current_bucket_.get()};
@@ -434,7 +433,7 @@ void OutlierDetectionLb::SubchannelWrapper::WatchConnectivityState(
     std::unique_ptr<ConnectivityStateWatcherInterface> watcher) {
   ConnectivityStateWatcherInterface* watcher_ptr = watcher.get();
   auto watcher_wrapper =
-      absl::make_unique<WatcherWrapper>(std::move(watcher), ejected_);
+      std::make_unique<WatcherWrapper>(std::move(watcher), ejected_);
   watchers_.emplace(watcher_ptr, watcher_wrapper.get());
   wrapped_subchannel()->WatchConnectivityState(std::move(watcher_wrapper));
 }
@@ -530,7 +529,7 @@ LoadBalancingPolicy::PickResult OutlierDetectionLb::Picker::Pick(
     // not both success_rate_ejection and failure_percentage_ejection are unset.
     if (counting_enabled_) {
       complete_pick->subchannel_call_tracker =
-          absl::make_unique<SubchannelCallTracker>(
+          std::make_unique<SubchannelCallTracker>(
               std::move(complete_pick->subchannel_call_tracker),
               subchannel_wrapper->subchannel_state());
     }
@@ -693,7 +692,7 @@ absl::Status OutlierDetectionLb::UpdateLocked(UpdateArgs args) {
 void OutlierDetectionLb::MaybeUpdatePickerLocked() {
   if (picker_ != nullptr) {
     auto outlier_detection_picker =
-        absl::make_unique<Picker>(this, picker_, config_->CountingEnabled());
+        std::make_unique<Picker>(this, picker_, config_->CountingEnabled());
     if (GRPC_TRACE_FLAG_ENABLED(grpc_outlier_detection_lb_trace)) {
       gpr_log(GPR_INFO,
               "[outlier_detection_lb %p] updating connectivity: state=%s "
@@ -712,7 +711,7 @@ OrphanablePtr<LoadBalancingPolicy> OutlierDetectionLb::CreateChildPolicyLocked(
   lb_policy_args.work_serializer = work_serializer();
   lb_policy_args.args = args;
   lb_policy_args.channel_control_helper =
-      absl::make_unique<Helper>(Ref(DEBUG_LOCATION, "Helper"));
+      std::make_unique<Helper>(Ref(DEBUG_LOCATION, "Helper"));
   OrphanablePtr<LoadBalancingPolicy> lb_policy =
       MakeOrphanable<ChildPolicyHandler>(std::move(lb_policy_args),
                                          &grpc_outlier_detection_lb_trace);
@@ -1131,7 +1130,7 @@ void OutlierDetectionConfig::JsonPostLoad(const Json& json, const JsonArgs&,
 void RegisterOutlierDetectionLbPolicy(CoreConfiguration::Builder* builder) {
   if (XdsOutlierDetectionEnabled()) {
     builder->lb_policy_registry()->RegisterLoadBalancingPolicyFactory(
-        absl::make_unique<OutlierDetectionLbFactory>());
+        std::make_unique<OutlierDetectionLbFactory>());
   }
 }
 

src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc

@@ -25,7 +25,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -241,14 +240,14 @@ void PickFirst::AttemptToConnectUsingLatestUpdateArgsLocked() {
             : latest_update_args_.addresses.status();
     channel_control_helper()->UpdateState(
         GRPC_CHANNEL_TRANSIENT_FAILURE, status,
-        absl::make_unique<TransientFailurePicker>(status));
+        std::make_unique<TransientFailurePicker>(status));
     channel_control_helper()->RequestReresolution();
   }
   // Otherwise, if this is the initial update, report CONNECTING.
   else if (subchannel_list_.get() == nullptr) {
     channel_control_helper()->UpdateState(
         GRPC_CHANNEL_CONNECTING, absl::Status(),
-        absl::make_unique<QueuePicker>(Ref(DEBUG_LOCATION, "QueuePicker")));
+        std::make_unique<QueuePicker>(Ref(DEBUG_LOCATION, "QueuePicker")));
   }
   // If the new update is empty or we don't yet have a selected subchannel in
   // the current list, replace the current subchannel list immediately.
@@ -340,11 +339,11 @@ void PickFirst::PickFirstSubchannelData::ProcessConnectivityChangeLocked(
                 .ToString()));
         p->channel_control_helper()->UpdateState(
             GRPC_CHANNEL_TRANSIENT_FAILURE, status,
-            absl::make_unique<TransientFailurePicker>(status));
+            std::make_unique<TransientFailurePicker>(status));
       } else {
         p->channel_control_helper()->UpdateState(
             GRPC_CHANNEL_CONNECTING, absl::Status(),
-            absl::make_unique<QueuePicker>(
+            std::make_unique<QueuePicker>(
                 p->Ref(DEBUG_LOCATION, "QueuePicker")));
       }
       return;
@@ -362,7 +361,7 @@ void PickFirst::PickFirstSubchannelData::ProcessConnectivityChangeLocked(
     p->subchannel_list_.reset();
     p->channel_control_helper()->UpdateState(
         GRPC_CHANNEL_IDLE, absl::Status(),
-        absl::make_unique<QueuePicker>(p->Ref(DEBUG_LOCATION, "QueuePicker")));
+        std::make_unique<QueuePicker>(p->Ref(DEBUG_LOCATION, "QueuePicker")));
     return;
   }
   // If we get here, there are two possible cases:
@@ -436,7 +435,7 @@ void PickFirst::PickFirstSubchannelData::ProcessConnectivityChangeLocked(
                            connectivity_status().ToString()));
           p->channel_control_helper()->UpdateState(
               GRPC_CHANNEL_TRANSIENT_FAILURE, status,
-              absl::make_unique<TransientFailurePicker>(status));
+              std::make_unique<TransientFailurePicker>(status));
         }
       }
       // If the next subchannel is in IDLE, trigger a connection attempt.
@@ -462,7 +461,7 @@ void PickFirst::PickFirstSubchannelData::ProcessConnectivityChangeLocked(
           !subchannel_list()->in_transient_failure()) {
         p->channel_control_helper()->UpdateState(
             GRPC_CHANNEL_CONNECTING, absl::Status(),
-            absl::make_unique<QueuePicker>(
+            std::make_unique<QueuePicker>(
                 p->Ref(DEBUG_LOCATION, "QueuePicker")));
       }
       break;
@@ -503,7 +502,7 @@ void PickFirst::PickFirstSubchannelData::ProcessUnselectedReadyLocked() {
   p->selected_ = this;
   p->channel_control_helper()->UpdateState(
       GRPC_CHANNEL_READY, absl::Status(),
-      absl::make_unique<Picker>(subchannel()->Ref()));
+      std::make_unique<Picker>(subchannel()->Ref()));
   for (size_t i = 0; i < subchannel_list()->num_subchannels(); ++i) {
     if (i != Index()) {
       subchannel_list()->subchannel(i)->ShutdownLocked();
@@ -539,7 +538,7 @@ class PickFirstFactory : public LoadBalancingPolicyFactory {
 
 void RegisterPickFirstLbPolicy(CoreConfiguration::Builder* builder) {
   builder->lb_policy_registry()->RegisterLoadBalancingPolicyFactory(
-      absl::make_unique<PickFirstFactory>());
+      std::make_unique<PickFirstFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/lb_policy/priority/priority.cc

@@ -26,7 +26,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -421,7 +420,7 @@ void PriorityLb::ChoosePriorityLocked() {
         absl::UnavailableError("priority policy has empty priority list");
     channel_control_helper()->UpdateState(
         GRPC_CHANNEL_TRANSIENT_FAILURE, status,
-        absl::make_unique<TransientFailurePicker>(status));
+        std::make_unique<TransientFailurePicker>(status));
     return;
   }
   // Iterate through priorities, searching for one in READY or IDLE,
@@ -687,10 +686,10 @@ void PriorityLb::ChildPriority::Orphan() {
 std::unique_ptr<LoadBalancingPolicy::SubchannelPicker>
 PriorityLb::ChildPriority::GetPicker() {
   if (picker_wrapper_ == nullptr) {
-    return absl::make_unique<QueuePicker>(
+    return std::make_unique<QueuePicker>(
         priority_policy_->Ref(DEBUG_LOCATION, "QueuePicker"));
   }
-  return absl::make_unique<RefCountedPickerWrapper>(picker_wrapper_);
+  return std::make_unique<RefCountedPickerWrapper>(picker_wrapper_);
 }
 
 absl::Status PriorityLb::ChildPriority::UpdateLocked(
@@ -731,7 +730,7 @@ PriorityLb::ChildPriority::CreateChildPolicyLocked(const ChannelArgs& args) {
   lb_policy_args.work_serializer = priority_policy_->work_serializer();
   lb_policy_args.args = args;
   lb_policy_args.channel_control_helper =
-      absl::make_unique<Helper>(this->Ref(DEBUG_LOCATION, "Helper"));
+      std::make_unique<Helper>(this->Ref(DEBUG_LOCATION, "Helper"));
   OrphanablePtr<LoadBalancingPolicy> lb_policy =
       MakeOrphanable<ChildPolicyHandler>(std::move(lb_policy_args),
                                          &grpc_lb_priority_trace);
@@ -944,7 +943,7 @@ class PriorityLbFactory : public LoadBalancingPolicyFactory {
 
 void RegisterPriorityLbPolicy(CoreConfiguration::Builder* builder) {
   builder->lb_policy_registry()->RegisterLoadBalancingPolicyFactory(
-      absl::make_unique<PriorityLbFactory>());
+      std::make_unique<PriorityLbFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/lb_policy/ring_hash/ring_hash.cc

@@ -32,7 +32,6 @@
 #include "absl/base/attributes.h"
 #include "absl/base/thread_annotations.h"
 #include "absl/container/inlined_vector.h"
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/numbers.h"
@@ -661,7 +660,7 @@ void RingHash::RingHashSubchannelList::UpdateRingHashConnectivityStateLocked(
   // Note that we use our own picker regardless of connectivity state.
   p->channel_control_helper()->UpdateState(
       state, status,
-      absl::make_unique<Picker>(Ref(DEBUG_LOCATION, "RingHashPicker")));
+      std::make_unique<Picker>(Ref(DEBUG_LOCATION, "RingHashPicker")));
   // While the ring_hash policy is reporting TRANSIENT_FAILURE, it will
   // not be getting any pick requests from the priority policy.
   // However, because the ring_hash policy does not attempt to
@@ -848,7 +847,7 @@ absl::Status RingHash::UpdateLocked(UpdateArgs args) {
               : args.addresses.status();
       channel_control_helper()->UpdateState(
           GRPC_CHANNEL_TRANSIENT_FAILURE, status,
-          absl::make_unique<TransientFailurePicker>(status));
+          std::make_unique<TransientFailurePicker>(status));
       return status;
     }
     // Otherwise, report IDLE.
@@ -885,7 +884,7 @@ class RingHashFactory : public LoadBalancingPolicyFactory {
 
 void RegisterRingHashLbPolicy(CoreConfiguration::Builder* builder) {
   builder->lb_policy_registry()->RegisterLoadBalancingPolicyFactory(
-      absl::make_unique<RingHashFactory>());
+      std::make_unique<RingHashFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/lb_policy/rls/rls.cc

@@ -40,7 +40,6 @@
 
 #include "absl/base/thread_annotations.h"
 #include "absl/hash/hash.h"
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -728,7 +727,7 @@ RlsLb::ChildPolicyWrapper::ChildPolicyWrapper(RefCountedPtr<RlsLb> lb_policy,
                                                      : nullptr),
       lb_policy_(lb_policy),
       target_(std::move(target)),
-      picker_(absl::make_unique<QueuePicker>(std::move(lb_policy))) {
+      picker_(std::make_unique<QueuePicker>(std::move(lb_policy))) {
   lb_policy_->child_policy_map_.emplace(target_, this);
 }
 
@@ -809,7 +808,7 @@ void RlsLb::ChildPolicyWrapper::StartUpdate() {
               config.status().ToString().c_str());
     }
     pending_config_.reset();
-    picker_ = absl::make_unique<TransientFailurePicker>(
+    picker_ = std::make_unique<TransientFailurePicker>(
         absl::UnavailableError(config.status().message()));
     child_policy_.reset();
   } else {
@@ -825,7 +824,7 @@ absl::Status RlsLb::ChildPolicyWrapper::MaybeFinishUpdate() {
   if (child_policy_ == nullptr) {
     Args create_args;
     create_args.work_serializer = lb_policy_->work_serializer();
-    create_args.channel_control_helper = absl::make_unique<ChildPolicyHelper>(
+    create_args.channel_control_helper = std::make_unique<ChildPolicyHelper>(
         WeakRef(DEBUG_LOCATION, "ChildPolicyHelper"));
     create_args.args = lb_policy_->channel_args_;
     child_policy_ = MakeOrphanable<ChildPolicyHandler>(std::move(create_args),
@@ -1156,7 +1155,7 @@ void RlsLb::Cache::Entry::BackoffTimer::OnBackoffTimer(
 //
 
 std::unique_ptr<BackOff> MakeCacheEntryBackoff() {
-  return absl::make_unique<BackOff>(
+  return std::make_unique<BackOff>(
       BackOff::Options()
           .set_initial_backoff(kCacheBackoffInitial)
           .set_multiplier(kCacheBackoffMultiplier)
@@ -2140,7 +2139,7 @@ void RlsLb::UpdatePickerLocked() {
     status = absl::UnavailableError("no children available");
   }
   channel_control_helper()->UpdateState(
-      state, status, absl::make_unique<Picker>(Ref(DEBUG_LOCATION, "Picker")));
+      state, status, std::make_unique<Picker>(Ref(DEBUG_LOCATION, "Picker")));
 }
 
 //
@@ -2504,7 +2503,7 @@ class RlsLbFactory : public LoadBalancingPolicyFactory {
 
 void RegisterRlsLbPolicy(CoreConfiguration::Builder* builder) {
   builder->lb_policy_registry()->RegisterLoadBalancingPolicyFactory(
-      absl::make_unique<RlsLbFactory>());
+      std::make_unique<RlsLbFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc

@@ -25,7 +25,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -307,7 +306,7 @@ absl::Status RoundRobin::UpdateLocked(UpdateArgs args) {
                             : args.addresses.status();
     channel_control_helper()->UpdateState(
         GRPC_CHANNEL_TRANSIENT_FAILURE, status,
-        absl::make_unique<TransientFailurePicker>(status));
+        std::make_unique<TransientFailurePicker>(status));
     return status;
   }
   // Otherwise, if this is the initial update, immediately promote it to
@@ -316,7 +315,7 @@ absl::Status RoundRobin::UpdateLocked(UpdateArgs args) {
     subchannel_list_ = std::move(latest_pending_subchannel_list_);
     channel_control_helper()->UpdateState(
         GRPC_CHANNEL_CONNECTING, absl::Status(),
-        absl::make_unique<QueuePicker>(Ref(DEBUG_LOCATION, "QueuePicker")));
+        std::make_unique<QueuePicker>(Ref(DEBUG_LOCATION, "QueuePicker")));
   }
   return absl::OkStatus();
 }
@@ -387,8 +386,8 @@ void RoundRobin::RoundRobinSubchannelList::
       gpr_log(GPR_INFO, "[RR %p] reporting READY with subchannel list %p", p,
               this);
     }
-    p->channel_control_helper()->UpdateState(
+    p->channel_control_helper()->UpdateState(GRPC_CHANNEL_READY, absl::Status(),
-        GRPC_CHANNEL_READY, absl::Status(), absl::make_unique<Picker>(p, this));
+                                             std::make_unique<Picker>(p, this));
   } else if (num_connecting_ > 0) {
     if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_round_robin_trace)) {
       gpr_log(GPR_INFO, "[RR %p] reporting CONNECTING with subchannel list %p",
@@ -396,7 +395,7 @@ void RoundRobin::RoundRobinSubchannelList::
     }
     p->channel_control_helper()->UpdateState(
         GRPC_CHANNEL_CONNECTING, absl::Status(),
-        absl::make_unique<QueuePicker>(p->Ref(DEBUG_LOCATION, "QueuePicker")));
+        std::make_unique<QueuePicker>(p->Ref(DEBUG_LOCATION, "QueuePicker")));
   } else if (num_transient_failure_ == num_subchannels()) {
     if (GRPC_TRACE_FLAG_ENABLED(grpc_lb_round_robin_trace)) {
       gpr_log(GPR_INFO,
@@ -410,7 +409,7 @@ void RoundRobin::RoundRobinSubchannelList::
     }
     p->channel_control_helper()->UpdateState(
         GRPC_CHANNEL_TRANSIENT_FAILURE, last_failure_,
-        absl::make_unique<TransientFailurePicker>(last_failure_));
+        std::make_unique<TransientFailurePicker>(last_failure_));
   }
 }
 
@@ -525,7 +524,7 @@ class RoundRobinFactory : public LoadBalancingPolicyFactory {
 
 void RegisterRoundRobinLbPolicy(CoreConfiguration::Builder* builder) {
   builder->lb_policy_registry()->RegisterLoadBalancingPolicyFactory(
-      absl::make_unique<RoundRobinFactory>());
+      std::make_unique<RoundRobinFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/lb_policy/weighted_target/weighted_target.cc

@@ -26,7 +26,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -363,7 +362,7 @@ absl::Status WeightedTargetLb::UpdateLocked(UpdateArgs args) {
         "no children in weighted_target policy: ", args.resolution_note));
     channel_control_helper()->UpdateState(
         GRPC_CHANNEL_TRANSIENT_FAILURE, status,
-        absl::make_unique<TransientFailurePicker>(status));
+        std::make_unique<TransientFailurePicker>(status));
     return absl::OkStatus();
   }
   UpdateStateLocked();
@@ -459,15 +458,15 @@ void WeightedTargetLb::UpdateStateLocked() {
   absl::Status status;
   switch (connectivity_state) {
     case GRPC_CHANNEL_READY:
-      picker = absl::make_unique<WeightedPicker>(std::move(ready_picker_list));
+      picker = std::make_unique<WeightedPicker>(std::move(ready_picker_list));
       break;
     case GRPC_CHANNEL_CONNECTING:
     case GRPC_CHANNEL_IDLE:
       picker =
-          absl::make_unique<QueuePicker>(Ref(DEBUG_LOCATION, "QueuePicker"));
+          std::make_unique<QueuePicker>(Ref(DEBUG_LOCATION, "QueuePicker"));
       break;
     default:
-      picker = absl::make_unique<WeightedPicker>(std::move(tf_picker_list));
+      picker = std::make_unique<WeightedPicker>(std::move(tf_picker_list));
   }
   channel_control_helper()->UpdateState(connectivity_state, status,
                                         std::move(picker));
@@ -561,7 +560,7 @@ WeightedTargetLb::WeightedChild::CreateChildPolicyLocked(
   lb_policy_args.work_serializer = weighted_target_policy_->work_serializer();
   lb_policy_args.args = args;
   lb_policy_args.channel_control_helper =
-      absl::make_unique<Helper>(this->Ref(DEBUG_LOCATION, "Helper"));
+      std::make_unique<Helper>(this->Ref(DEBUG_LOCATION, "Helper"));
   OrphanablePtr<LoadBalancingPolicy> lb_policy =
       MakeOrphanable<ChildPolicyHandler>(std::move(lb_policy_args),
                                          &grpc_lb_weighted_target_trace);
@@ -770,7 +769,7 @@ class WeightedTargetLbFactory : public LoadBalancingPolicyFactory {
 
 void RegisterWeightedTargetLbPolicy(CoreConfiguration::Builder* builder) {
   builder->lb_policy_registry()->RegisterLoadBalancingPolicyFactory(
-      absl::make_unique<WeightedTargetLbFactory>());
+      std::make_unique<WeightedTargetLbFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/lb_policy/xds/cds.cc

@@ -24,7 +24,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -546,7 +545,7 @@ void CdsLb::OnClusterChanged(const std::string& name,
       LoadBalancingPolicy::Args args;
       args.work_serializer = work_serializer();
       args.args = args_;
-      args.channel_control_helper = absl::make_unique<Helper>(Ref());
+      args.channel_control_helper = std::make_unique<Helper>(Ref());
       child_policy_ =
           CoreConfiguration::Get()
               .lb_policy_registry()
@@ -600,7 +599,7 @@ void CdsLb::OnError(const std::string& name, absl::Status status) {
   if (child_policy_ == nullptr) {
     channel_control_helper()->UpdateState(
         GRPC_CHANNEL_TRANSIENT_FAILURE, status,
-        absl::make_unique<TransientFailurePicker>(absl::UnavailableError(
+        std::make_unique<TransientFailurePicker>(absl::UnavailableError(
             absl::StrCat(name, ": ", status.ToString()))));
   }
 }
@@ -614,7 +613,7 @@ void CdsLb::OnResourceDoesNotExist(const std::string& name) {
       absl::StrCat("CDS resource \"", config_->cluster(), "\" does not exist"));
   channel_control_helper()->UpdateState(
       GRPC_CHANNEL_TRANSIENT_FAILURE, status,
-      absl::make_unique<TransientFailurePicker>(status));
+      std::make_unique<TransientFailurePicker>(status));
   MaybeDestroyChildPolicyLocked();
 }
 
@@ -766,7 +765,7 @@ class CdsLbFactory : public LoadBalancingPolicyFactory {
 
 void RegisterCdsLbPolicy(CoreConfiguration::Builder* builder) {
   builder->lb_policy_registry()->RegisterLoadBalancingPolicyFactory(
-      absl::make_unique<CdsLbFactory>());
+      std::make_unique<CdsLbFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/lb_policy/xds/xds.h

@@ -23,8 +23,6 @@
 #include <string>
 #include <utility>
 
-#include "absl/memory/memory.h"
-
 #include "src/core/ext/xds/xds_client_stats.h"
 #include "src/core/lib/gprpp/ref_counted_ptr.h"
 #include "src/core/lib/resolver/server_address.h"
@@ -44,7 +42,7 @@ class XdsLocalityAttribute : public ServerAddress::AttributeInterface {
   }
 
   std::unique_ptr<AttributeInterface> Copy() const override {
-    return absl::make_unique<XdsLocalityAttribute>(locality_name_->Ref());
+    return std::make_unique<XdsLocalityAttribute>(locality_name_->Ref());
   }
 
   int Cmp(const AttributeInterface* other) const override {

src/core/ext/filters/client_channel/lb_policy/xds/xds_cluster_impl.cc

@@ -27,7 +27,6 @@
 #include <vector>
 
 #include "absl/base/thread_annotations.h"
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -418,7 +417,7 @@ LoadBalancingPolicy::PickResult XdsClusterImplLb::Picker::Pick(
     }
     // Inject subchannel call tracker to record call completion.
     complete_pick->subchannel_call_tracker =
-        absl::make_unique<SubchannelCallTracker>(
+        std::make_unique<SubchannelCallTracker>(
             std::move(complete_pick->subchannel_call_tracker),
             std::move(locality_stats),
             call_counter_->Ref(DEBUG_LOCATION, "SubchannelCallTracker"));
@@ -531,7 +530,7 @@ void XdsClusterImplLb::MaybeUpdatePickerLocked() {
   // If we're dropping all calls, report READY, regardless of what (or
   // whether) the child has reported.
   if (config_->drop_config() != nullptr && config_->drop_config()->drop_all()) {
-    auto drop_picker = absl::make_unique<Picker>(this, picker_);
+    auto drop_picker = std::make_unique<Picker>(this, picker_);
     if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_cluster_impl_lb_trace)) {
       gpr_log(GPR_INFO,
               "[xds_cluster_impl_lb %p] updating connectivity (drop all): "
@@ -544,7 +543,7 @@ void XdsClusterImplLb::MaybeUpdatePickerLocked() {
   }
   // Otherwise, update only if we have a child picker.
   if (picker_ != nullptr) {
-    auto drop_picker = absl::make_unique<Picker>(this, picker_);
+    auto drop_picker = std::make_unique<Picker>(this, picker_);
     if (GRPC_TRACE_FLAG_ENABLED(grpc_xds_cluster_impl_lb_trace)) {
       gpr_log(GPR_INFO,
               "[xds_cluster_impl_lb %p] updating connectivity: state=%s "
@@ -563,7 +562,7 @@ OrphanablePtr<LoadBalancingPolicy> XdsClusterImplLb::CreateChildPolicyLocked(
   lb_policy_args.work_serializer = work_serializer();
   lb_policy_args.args = args;
   lb_policy_args.channel_control_helper =
-      absl::make_unique<Helper>(Ref(DEBUG_LOCATION, "Helper"));
+      std::make_unique<Helper>(Ref(DEBUG_LOCATION, "Helper"));
   OrphanablePtr<LoadBalancingPolicy> lb_policy =
       MakeOrphanable<ChildPolicyHandler>(std::move(lb_policy_args),
                                          &grpc_xds_cluster_impl_lb_trace);
@@ -794,7 +793,7 @@ class XdsClusterImplLbFactory : public LoadBalancingPolicyFactory {
 
 void RegisterXdsClusterImplLbPolicy(CoreConfiguration::Builder* builder) {
   builder->lb_policy_registry()->RegisterLoadBalancingPolicyFactory(
-      absl::make_unique<XdsClusterImplLbFactory>());
+      std::make_unique<XdsClusterImplLbFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/lb_policy/xds/xds_cluster_manager.cc

@@ -25,7 +25,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -408,11 +407,11 @@ void XdsClusterManagerLb::UpdateStateLocked() {
       }
       child_picker = MakeRefCounted<ChildPickerWrapper>(
           cluster_name,
-          absl::make_unique<QueuePicker>(Ref(DEBUG_LOCATION, "QueuePicker")));
+          std::make_unique<QueuePicker>(Ref(DEBUG_LOCATION, "QueuePicker")));
     }
   }
   std::unique_ptr<SubchannelPicker> picker =
-      absl::make_unique<ClusterPicker>(std::move(cluster_map));
+      std::make_unique<ClusterPicker>(std::move(cluster_map));
   absl::Status status;
   if (connectivity_state == GRPC_CHANNEL_TRANSIENT_FAILURE) {
     status = absl::Status(absl::StatusCode::kUnavailable,
@@ -480,7 +479,7 @@ XdsClusterManagerLb::ClusterChild::CreateChildPolicyLocked(
       xds_cluster_manager_policy_->work_serializer();
   lb_policy_args.args = args;
   lb_policy_args.channel_control_helper =
-      absl::make_unique<Helper>(this->Ref(DEBUG_LOCATION, "Helper"));
+      std::make_unique<Helper>(this->Ref(DEBUG_LOCATION, "Helper"));
   OrphanablePtr<LoadBalancingPolicy> lb_policy =
       MakeOrphanable<ChildPolicyHandler>(std::move(lb_policy_args),
                                          &grpc_xds_cluster_manager_lb_trace);
@@ -712,7 +711,7 @@ class XdsClusterManagerLbFactory : public LoadBalancingPolicyFactory {
 
 void RegisterXdsClusterManagerLbPolicy(CoreConfiguration::Builder* builder) {
   builder->lb_policy_registry()->RegisterLoadBalancingPolicyFactory(
-      absl::make_unique<XdsClusterManagerLbFactory>());
+      std::make_unique<XdsClusterManagerLbFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/lb_policy/xds/xds_cluster_resolver.cc

@@ -27,7 +27,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -515,7 +514,7 @@ void XdsClusterResolverLb::LogicalDNSDiscoveryMechanism::Start() {
   resolver_ = CoreConfiguration::Get().resolver_registry().CreateResolver(
       target.c_str(), args, parent()->interested_parties(),
       parent()->work_serializer(),
-      absl::make_unique<ResolverResultHandler>(
+      std::make_unique<ResolverResultHandler>(
           Ref(DEBUG_LOCATION, "LogicalDNSDiscoveryMechanism")));
   if (resolver_ == nullptr) {
     parent()->OnResourceDoesNotExist(
@@ -840,12 +839,12 @@ ServerAddressList XdsClusterResolverLb::CreateChildPolicyAddressesLocked() {
                       kHierarchicalPathAttributeKey,
                       MakeHierarchicalPathAttribute(hierarchical_path))
                   .WithAttribute(kXdsLocalityNameAttributeKey,
-                                 absl::make_unique<XdsLocalityAttribute>(
+                                 std::make_unique<XdsLocalityAttribute>(
                                      locality_name->Ref()))
                   .WithAttribute(
                       ServerAddressWeightAttribute::
                           kServerAddressWeightAttributeKey,
-                      absl::make_unique<ServerAddressWeightAttribute>(weight)));
+                      std::make_unique<ServerAddressWeightAttribute>(weight)));
         }
       }
     }
@@ -1015,7 +1014,7 @@ XdsClusterResolverLb::CreateChildPolicyConfigLocked() {
         "config");
     channel_control_helper()->UpdateState(
         GRPC_CHANNEL_TRANSIENT_FAILURE, status,
-        absl::make_unique<TransientFailurePicker>(status));
+        std::make_unique<TransientFailurePicker>(status));
     return nullptr;
   }
   return std::move(*config);
@@ -1052,7 +1051,7 @@ XdsClusterResolverLb::CreateChildPolicyLocked(const ChannelArgs& args) {
   lb_policy_args.work_serializer = work_serializer();
   lb_policy_args.args = args;
   lb_policy_args.channel_control_helper =
-      absl::make_unique<Helper>(Ref(DEBUG_LOCATION, "Helper"));
+      std::make_unique<Helper>(Ref(DEBUG_LOCATION, "Helper"));
   OrphanablePtr<LoadBalancingPolicy> lb_policy =
       CoreConfiguration::Get().lb_policy_registry().CreateLoadBalancingPolicy(
           "priority_experimental", std::move(lb_policy_args));
@@ -1294,7 +1293,7 @@ class XdsClusterResolverLbFactory : public LoadBalancingPolicyFactory {
 
 void RegisterXdsClusterResolverLbPolicy(CoreConfiguration::Builder* builder) {
   builder->lb_policy_registry()->RegisterLoadBalancingPolicyFactory(
-      absl::make_unique<XdsClusterResolverLbFactory>());
+      std::make_unique<XdsClusterResolverLbFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/resolver/binder/binder_resolver.cc

@@ -30,7 +30,6 @@
 #include <string>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
@@ -142,7 +141,7 @@ class BinderResolverFactory : public ResolverFactory {
 
 void RegisterBinderResolver(CoreConfiguration::Builder* builder) {
   builder->resolver_registry()->RegisterResolverFactory(
-      absl::make_unique<BinderResolverFactory>());
+      std::make_unique<BinderResolverFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc

@@ -28,7 +28,6 @@
 #include <vector>
 
 #include "absl/base/thread_annotations.h"
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/string_view.h"
@@ -832,7 +831,7 @@ bool UseAresDnsResolver() {
 void RegisterAresDnsResolver(CoreConfiguration::Builder* builder) {
   if (UseAresDnsResolver()) {
     builder->resolver_registry()->RegisterResolverFactory(
-        absl::make_unique<AresClientChannelDNSResolverFactory>());
+        std::make_unique<AresClientChannelDNSResolverFactory>());
   }
 }
 
@@ -846,8 +845,7 @@ void grpc_resolver_dns_ares_init() {
       GRPC_LOG_IF_ERROR("grpc_ares_init() failed", error);
       return;
     }
-    grpc_core::ResetDNSResolver(
+    grpc_core::ResetDNSResolver(std::make_unique<grpc_core::AresDNSResolver>());
-        absl::make_unique<grpc_core::AresDNSResolver>());
   }
 }
 

src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.cc

@@ -21,7 +21,6 @@
 #include <string>
 
 #include "absl/base/thread_annotations.h"
-#include "absl/memory/memory.h"
 
 #include "src/core/lib/gprpp/sync.h"
 #include "src/core/lib/iomgr/closure.h"
@@ -108,7 +107,7 @@ class GrpcPolledFdFactoryPosix : public GrpcPolledFdFactory {
 };
 
 std::unique_ptr<GrpcPolledFdFactory> NewGrpcPolledFdFactory(Mutex* /* mu */) {
-  return absl::make_unique<GrpcPolledFdFactoryPosix>();
+  return std::make_unique<GrpcPolledFdFactoryPosix>();
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_windows.cc

@@ -874,7 +874,7 @@ class GrpcPolledFdFactoryWindows : public GrpcPolledFdFactory {
 };
 
 std::unique_ptr<GrpcPolledFdFactory> NewGrpcPolledFdFactory(Mutex* mu) {
-  return absl::make_unique<GrpcPolledFdFactoryWindows>(mu);
+  return std::make_unique<GrpcPolledFdFactoryWindows>(mu);
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc

@@ -43,7 +43,6 @@
 #include <address_sorting/address_sorting.h>
 #include <ares.h>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -658,7 +657,7 @@ static void on_hostbyname_done_locked(void* arg, int status, int /*timeouts*/,
     std::unique_ptr<ServerAddressList>* address_list_ptr =
         hr->is_balancer ? r->balancer_addresses_out : r->addresses_out;
     if (*address_list_ptr == nullptr) {
-      *address_list_ptr = absl::make_unique<ServerAddressList>();
+      *address_list_ptr = std::make_unique<ServerAddressList>();
     }
     ServerAddressList& addresses = **address_list_ptr;
     for (size_t i = 0; hostent->h_addr_list[i] != nullptr; ++i) {
@@ -920,7 +919,7 @@ static bool inner_resolve_as_ip_literal_locked(
       grpc_parse_ipv6_hostport(hostport->c_str(), &addr,
                                false /* log errors */)) {
     GPR_ASSERT(*addrs == nullptr);
-    *addrs = absl::make_unique<ServerAddressList>();
+    *addrs = std::make_unique<ServerAddressList>();
     (*addrs)->emplace_back(addr.addr, addr.len, grpc_core::ChannelArgs());
     return true;
   }
@@ -978,7 +977,7 @@ static bool inner_maybe_resolve_localhost_manually_locked(
   }
   if (gpr_stricmp(host->c_str(), "localhost") == 0) {
     GPR_ASSERT(*addrs == nullptr);
-    *addrs = absl::make_unique<grpc_core::ServerAddressList>();
+    *addrs = std::make_unique<grpc_core::ServerAddressList>();
     uint16_t numeric_port = grpc_strhtons(port->c_str());
     // Append the ipv6 loopback address.
     struct sockaddr_in6 ipv6_loopback_addr;

src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.cc

@@ -23,7 +23,6 @@
 #include <vector>
 
 #include "absl/functional/bind_front.h"
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -190,12 +189,12 @@ void RegisterNativeDnsResolver(CoreConfiguration::Builder* builder) {
   if (gpr_stricmp(resolver, "native") == 0) {
     gpr_log(GPR_DEBUG, "Using native dns resolver");
     builder->resolver_registry()->RegisterResolverFactory(
-        absl::make_unique<NativeClientChannelDNSResolverFactory>());
+        std::make_unique<NativeClientChannelDNSResolverFactory>());
   } else {
     if (!builder->resolver_registry()->HasResolverFactory("dns")) {
       gpr_log(GPR_DEBUG, "Using native dns resolver");
       builder->resolver_registry()->RegisterResolverFactory(
-          absl::make_unique<NativeClientChannelDNSResolverFactory>());
+          std::make_unique<NativeClientChannelDNSResolverFactory>());
     }
   }
 }

src/core/ext/filters/client_channel/resolver/fake/fake_resolver.cc

@@ -24,7 +24,6 @@
 #include <memory>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/string_view.h"
@@ -362,7 +361,7 @@ class FakeResolverFactory : public ResolverFactory {
 
 void RegisterFakeResolver(CoreConfiguration::Builder* builder) {
   builder->resolver_registry()->RegisterResolverFactory(
-      absl::make_unique<FakeResolverFactory>());
+      std::make_unique<FakeResolverFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/resolver/google_c2p/google_c2p_resolver.cc

@@ -25,7 +25,6 @@
 #include <string>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -453,9 +452,9 @@ class ExperimentalGoogleCloud2ProdResolverFactory : public ResolverFactory {
 
 void RegisterCloud2ProdResolver(CoreConfiguration::Builder* builder) {
   builder->resolver_registry()->RegisterResolverFactory(
-      absl::make_unique<GoogleCloud2ProdResolverFactory>());
+      std::make_unique<GoogleCloud2ProdResolverFactory>());
   builder->resolver_registry()->RegisterResolverFactory(
-      absl::make_unique<ExperimentalGoogleCloud2ProdResolverFactory>());
+      std::make_unique<ExperimentalGoogleCloud2ProdResolverFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc

@@ -22,7 +22,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_split.h"
 #include "absl/strings/string_view.h"
@@ -179,14 +178,14 @@ class UnixAbstractResolverFactory : public ResolverFactory {
 
 void RegisterSockaddrResolver(CoreConfiguration::Builder* builder) {
   builder->resolver_registry()->RegisterResolverFactory(
-      absl::make_unique<IPv4ResolverFactory>());
+      std::make_unique<IPv4ResolverFactory>());
   builder->resolver_registry()->RegisterResolverFactory(
-      absl::make_unique<IPv6ResolverFactory>());
+      std::make_unique<IPv6ResolverFactory>());
 #ifdef GRPC_HAVE_UNIX_SOCKET
   builder->resolver_registry()->RegisterResolverFactory(
-      absl::make_unique<UnixResolverFactory>());
+      std::make_unique<UnixResolverFactory>());
   builder->resolver_registry()->RegisterResolverFactory(
-      absl::make_unique<UnixAbstractResolverFactory>());
+      std::make_unique<UnixAbstractResolverFactory>());
 #endif
 }
 

src/core/ext/filters/client_channel/resolver/xds/xds_resolver.cc

@@ -27,7 +27,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/meta/type_traits.h"
 #include "absl/random/random.h"
 #include "absl/status/status.h"
@@ -1124,7 +1123,7 @@ class XdsResolverFactory : public ResolverFactory {
 
 void RegisterXdsResolver(CoreConfiguration::Builder* builder) {
   builder->resolver_registry()->RegisterResolverFactory(
-      absl::make_unique<XdsResolverFactory>());
+      std::make_unique<XdsResolverFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/filters/client_channel/resolver_result_parsing.cc

@@ -24,7 +24,6 @@
 #include <map>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -50,7 +49,7 @@ size_t ClientChannelServiceConfigParser::ParserIndex() {
 void ClientChannelServiceConfigParser::Register(
     CoreConfiguration::Builder* builder) {
   builder->service_config_parser()->RegisterParser(
-      absl::make_unique<ClientChannelServiceConfigParser>());
+      std::make_unique<ClientChannelServiceConfigParser>());
 }
 
 namespace {
@@ -143,7 +142,7 @@ ClientChannelServiceConfigParser::ParseGlobalParams(const ChannelArgs& /*args*/,
                      grpc_error_std_string(error)));
     return status;
   }
-  return absl::make_unique<ClientChannelGlobalParsedConfig>(
+  return std::make_unique<ClientChannelGlobalParsedConfig>(
       std::move(parsed_lb_config), std::move(lb_policy_name),
       std::move(health_check_service_name));
 }
@@ -178,7 +177,7 @@ ClientChannelServiceConfigParser::ParsePerMethodParams(
                      grpc_error_std_string(error)));
     return status;
   }
-  return absl::make_unique<ClientChannelMethodParsedConfig>(timeout,
+  return std::make_unique<ClientChannelMethodParsedConfig>(timeout,
                                                            wait_for_ready);
 }
 

src/core/ext/filters/client_channel/retry_service_config.cc

@@ -27,7 +27,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/strings/str_cat.h"
 #include "absl/types/optional.h"
@@ -56,7 +55,7 @@ size_t RetryServiceConfigParser::ParserIndex() {
 
 void RetryServiceConfigParser::Register(CoreConfiguration::Builder* builder) {
   builder->service_config_parser()->RegisterParser(
-      absl::make_unique<RetryServiceConfigParser>());
+      std::make_unique<RetryServiceConfigParser>());
 }
 
 namespace {
@@ -156,7 +155,7 @@ RetryServiceConfigParser::ParseGlobalParams(const ChannelArgs& /*args*/,
                      grpc_error_std_string(error)));
     return status;
   }
-  return absl::make_unique<RetryGlobalConfig>(max_milli_tokens,
+  return std::make_unique<RetryGlobalConfig>(max_milli_tokens,
                                              milli_token_ratio);
 }
 
@@ -313,7 +312,7 @@ RetryServiceConfigParser::ParsePerMethodParams(const ChannelArgs& args,
                      grpc_error_std_string(error)));
     return status;
   }
-  return absl::make_unique<RetryMethodConfig>(
+  return std::make_unique<RetryMethodConfig>(
       max_attempts, initial_backoff, max_backoff, backoff_multiplier,
       retryable_status_codes, per_attempt_recv_timeout);
 }

src/core/ext/filters/fault_injection/service_config_parser.cc

@@ -21,7 +21,6 @@
 #include <algorithm>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/strings/str_cat.h"
 #include "absl/types/optional.h"
@@ -168,14 +167,14 @@ FaultInjectionServiceConfigParser::ParsePerMethodParams(const ChannelArgs& args,
     return status;
   }
   if (fault_injection_policies.empty()) return nullptr;
-  return absl::make_unique<FaultInjectionMethodParsedConfig>(
+  return std::make_unique<FaultInjectionMethodParsedConfig>(
       std::move(fault_injection_policies));
 }
 
 void FaultInjectionServiceConfigParser::Register(
     CoreConfiguration::Builder* builder) {
   builder->service_config_parser()->RegisterParser(
-      absl::make_unique<FaultInjectionServiceConfigParser>());
+      std::make_unique<FaultInjectionServiceConfigParser>());
 }
 
 size_t FaultInjectionServiceConfigParser::ParserIndex() {

src/core/ext/filters/message_size/message_size_filter.cc

@@ -25,7 +25,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/str_format.h"
@@ -121,13 +120,13 @@ MessageSizeParser::ParsePerMethodParams(const ChannelArgs& /*args*/,
                      grpc_error_std_string(error)));
     return status;
   }
-  return absl::make_unique<MessageSizeParsedConfig>(max_request_message_bytes,
+  return std::make_unique<MessageSizeParsedConfig>(max_request_message_bytes,
                                                    max_response_message_bytes);
 }
 
 void MessageSizeParser::Register(CoreConfiguration::Builder* builder) {
   builder->service_config_parser()->RegisterParser(
-      absl::make_unique<MessageSizeParser>());
+      std::make_unique<MessageSizeParser>());
 }
 
 size_t MessageSizeParser::ParserIndex() {

src/core/ext/filters/rbac/rbac_service_config_parser.cc

@@ -23,7 +23,6 @@
 #include <map>
 #include <string>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -193,7 +192,7 @@ Rbac::Permission ParsePermission(const Json::Object& permission_json,
           continue;
         }
         std::vector<grpc_error_handle> permission_error_list;
-        permissions.emplace_back(absl::make_unique<Rbac::Permission>(
+        permissions.emplace_back(std::make_unique<Rbac::Permission>(
             ParsePermission(*permission_json, &permission_error_list)));
         if (!permission_error_list.empty()) {
           error_list->push_back(GRPC_ERROR_CREATE_FROM_VECTOR_AND_CPP_STRING(
@@ -329,7 +328,7 @@ Rbac::Principal ParsePrincipal(const Json::Object& principal_json,
           continue;
         }
         std::vector<grpc_error_handle> principal_error_list;
-        principals.emplace_back(absl::make_unique<Rbac::Principal>(
+        principals.emplace_back(std::make_unique<Rbac::Principal>(
             ParsePrincipal(*principal_json, &principal_error_list)));
         if (!principal_error_list.empty()) {
           error_list->push_back(GRPC_ERROR_CREATE_FROM_VECTOR_AND_CPP_STRING(
@@ -489,7 +488,7 @@ Rbac::Policy ParsePolicy(const Json::Object& policy_json,
         continue;
       }
       std::vector<grpc_error_handle> permission_error_list;
-      permissions.emplace_back(absl::make_unique<Rbac::Permission>(
+      permissions.emplace_back(std::make_unique<Rbac::Permission>(
           ParsePermission(*permission_json, &permission_error_list)));
       if (!permission_error_list.empty()) {
         error_list->push_back(GRPC_ERROR_CREATE_FROM_VECTOR_AND_CPP_STRING(
@@ -509,7 +508,7 @@ Rbac::Policy ParsePolicy(const Json::Object& policy_json,
         continue;
       }
       std::vector<grpc_error_handle> principal_error_list;
-      principals.emplace_back(absl::make_unique<Rbac::Principal>(
+      principals.emplace_back(std::make_unique<Rbac::Principal>(
           ParsePrincipal(*principal_json, &principal_error_list)));
       if (!principal_error_list.empty()) {
         error_list->push_back(GRPC_ERROR_CREATE_FROM_VECTOR_AND_CPP_STRING(
@@ -604,12 +603,12 @@ RbacServiceConfigParser::ParsePerMethodParams(const ChannelArgs& args,
     return status;
   }
   if (rbac_policies.empty()) return nullptr;
-  return absl::make_unique<RbacMethodParsedConfig>(std::move(rbac_policies));
+  return std::make_unique<RbacMethodParsedConfig>(std::move(rbac_policies));
 }
 
 void RbacServiceConfigParser::Register(CoreConfiguration::Builder* builder) {
   builder->service_config_parser()->RegisterParser(
-      absl::make_unique<RbacServiceConfigParser>());
+      std::make_unique<RbacServiceConfigParser>());
 }
 
 size_t RbacServiceConfigParser::ParserIndex() {

src/core/ext/filters/server_config_selector/server_config_selector_filter.cc

@@ -21,7 +21,6 @@
 #include <utility>
 
 #include "absl/base/thread_annotations.h"
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/types/optional.h"
@@ -113,7 +112,7 @@ ServerConfigSelectorFilter::ServerConfigSelectorFilter(
       state_(std::make_shared<State>()) {
   GPR_ASSERT(server_config_selector_provider_ != nullptr);
   auto server_config_selector_watcher =
-      absl::make_unique<ServerConfigSelectorWatcher>(state_);
+      std::make_unique<ServerConfigSelectorWatcher>(state_);
   auto config_selector = server_config_selector_provider_->Watch(
       std::move(server_config_selector_watcher));
   MutexLock lock(&state_->mu);

src/core/ext/transport/binder/client/endpoint_binder_pool.cc

@@ -39,7 +39,7 @@ Java_io_grpc_binder_cpp_GrpcBinderConnection_notifyConnected__Ljava_lang_String_
   grpc_binder::ndk_util::SpAIBinder aibinder =
       grpc_binder::FromJavaBinder(jni_env, ibinder);
   gpr_log(GPR_INFO, "%s got aibinder = %p", __func__, aibinder.get());
-  auto b = absl::make_unique<grpc_binder::BinderAndroid>(aibinder);
+  auto b = std::make_unique<grpc_binder::BinderAndroid>(aibinder);
   GPR_ASSERT(b != nullptr);
   grpc_binder::GetEndpointBinderPool()->AddEndpointBinder(conn_id,
                                                           std::move(b));

src/core/ext/transport/binder/server/binder_server_credentials.cc

@@ -38,7 +38,7 @@ class BinderServerCredentialsImpl final : public ServerCredentials {
     return grpc_core::AddBinderPort(
         std::string(addr), server,
         [](grpc_binder::TransactionReceiver::OnTransactCb transact_cb) {
-          return absl::make_unique<grpc_binder::TransactionReceiverAndroid>(
+          return std::make_unique<grpc_binder::TransactionReceiverAndroid>(
               nullptr, std::move(transact_cb));
         },
         security_policy_);

src/core/ext/transport/binder/transport/binder_transport.cc

@@ -386,7 +386,7 @@ static void perform_stream_op_locked(void* stream_op,
     if (!gbs->is_client) {
       // Send trailing metadata to inform the other end about the cancellation,
       // regardless if we'd already done that or not.
-      auto cancel_tx = absl::make_unique<grpc_binder::Transaction>(
+      auto cancel_tx = std::make_unique<grpc_binder::Transaction>(
           gbs->GetTxCode(), gbt->is_client);
       cancel_tx->SetSuffix(grpc_binder::Metadata{});
       cancel_tx->SetStatus(1);
@@ -432,8 +432,7 @@ static void perform_stream_op_locked(void* stream_op,
   }
 
   int tx_code = gbs->tx_code;
-  auto tx =
+  auto tx = std::make_unique<grpc_binder::Transaction>(tx_code, gbt->is_client);
-      absl::make_unique<grpc_binder::Transaction>(tx_code, gbt->is_client);
 
   if (op->send_initial_metadata) {
     gpr_log(GPR_INFO, "send_initial_metadata");

src/core/ext/transport/binder/wire_format/binder_android.cc

@@ -70,7 +70,7 @@ ndk_util::binder_status_t f_onTransact(ndk_util::AIBinder* binder,
   TransactionReceiver::OnTransactCb* callback = user_data->callback;
   // Wrap the parcel in a ReadableParcel.
   std::unique_ptr<ReadableParcel> output =
-      absl::make_unique<ReadableParcelAndroid>(in);
+      std::make_unique<ReadableParcelAndroid>(in);
   // The lock should be released "after" the callback finishes.
   absl::Status status =
       (*callback)(code, output.get(), ndk_util::AIBinder_getCallingUid());
@@ -217,7 +217,7 @@ absl::Status BinderAndroid::Transact(BinderTransportTxCode tx_code) {
 std::unique_ptr<TransactionReceiver> BinderAndroid::ConstructTxReceiver(
     grpc_core::RefCountedPtr<WireReader> wire_reader_ref,
     TransactionReceiver::OnTransactCb transact_cb) const {
-  return absl::make_unique<TransactionReceiverAndroid>(wire_reader_ref,
+  return std::make_unique<TransactionReceiverAndroid>(wire_reader_ref,
                                                       transact_cb);
 }
 
@@ -282,7 +282,7 @@ absl::Status ReadableParcelAndroid::ReadBinder(std::unique_ptr<Binder>* data) {
     *data = nullptr;
     return absl::InternalError("AParcel_readStrongBinder failed");
   }
-  *data = absl::make_unique<BinderAndroid>(ndk_util::SpAIBinder(binder));
+  *data = std::make_unique<BinderAndroid>(ndk_util::SpAIBinder(binder));
   return absl::OkStatus();
 }
 

src/core/ext/transport/binder/wire_format/binder_android.h

@@ -80,7 +80,7 @@ class BinderAndroid final : public Binder {
  public:
   explicit BinderAndroid(ndk_util::SpAIBinder binder)
       : binder_(binder),
-        input_parcel_(absl::make_unique<WritableParcelAndroid>()) {}
+        input_parcel_(std::make_unique<WritableParcelAndroid>()) {}
   ~BinderAndroid() override = default;
 
   void* GetRawBinder() override { return binder_.get(); }

src/core/ext/transport/chttp2/server/chttp2_server.cc

@@ -31,7 +31,6 @@
 #include <vector>
 
 #include "absl/base/thread_annotations.h"
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -766,7 +765,7 @@ Chttp2ServerListener::~Chttp2ServerListener() {
 void Chttp2ServerListener::Start(
     Server* /*server*/, const std::vector<grpc_pollset*>* /* pollsets */) {
   if (server_->config_fetcher() != nullptr) {
-    auto watcher = absl::make_unique<ConfigFetcherWatcher>(Ref());
+    auto watcher = std::make_unique<ConfigFetcherWatcher>(Ref());
     config_fetcher_watcher_ = watcher.get();
     server_->config_fetcher()->StartWatch(
         grpc_sockaddr_to_string(&resolved_address_, false).value(),

src/core/ext/xds/file_watcher_certificate_provider_factory.cc

@@ -24,7 +24,6 @@
 #include <memory>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/strings/str_format.h"
 #include "absl/strings/str_join.h"
 
@@ -147,7 +146,7 @@ FileWatcherCertificateProviderFactory::CreateCertificateProvider(
 void RegisterFileWatcherCertificateProvider(
     CoreConfiguration::Builder* builder) {
   builder->certificate_provider_registry()->RegisterCertificateProviderFactory(
-      absl::make_unique<FileWatcherCertificateProviderFactory>());
+      std::make_unique<FileWatcherCertificateProviderFactory>());
 }
 
 }  // namespace grpc_core

src/core/ext/xds/xds_bootstrap_grpc.cc

@@ -25,7 +25,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/match.h"
@@ -235,7 +234,7 @@ absl::StatusOr<std::unique_ptr<GrpcXdsBootstrap>> GrpcXdsBootstrap::Create(
   };
   auto bootstrap = LoadFromJson<GrpcXdsBootstrap>(*json, XdsJsonArgs());
   if (!bootstrap.ok()) return bootstrap.status();
-  return absl::make_unique<GrpcXdsBootstrap>(std::move(*bootstrap));
+  return std::make_unique<GrpcXdsBootstrap>(std::move(*bootstrap));
 }
 
 const JsonLoaderInterface* GrpcXdsBootstrap::JsonLoader(const JsonArgs&) {

src/core/ext/xds/xds_certificate_provider.cc

@@ -23,7 +23,6 @@
 #include <utility>
 
 #include "absl/functional/bind_front.h"
-#include "absl/memory/memory.h"
 #include "absl/types/optional.h"
 
 #include <grpc/support/log.h>
@@ -189,7 +188,7 @@ void XdsCertificateProvider::ClusterCertificateState::
 void XdsCertificateProvider::ClusterCertificateState::UpdateRootCertWatcher(
     const std::string& cert_name,
     grpc_tls_certificate_distributor* root_cert_distributor) {
-  auto watcher = absl::make_unique<RootCertificatesWatcher>(
+  auto watcher = std::make_unique<RootCertificatesWatcher>(
       xds_certificate_provider_->distributor_, cert_name);
   root_cert_watcher_ = watcher.get();
   root_cert_distributor->WatchTlsCertificates(std::move(watcher),
@@ -199,7 +198,7 @@ void XdsCertificateProvider::ClusterCertificateState::UpdateRootCertWatcher(
 void XdsCertificateProvider::ClusterCertificateState::UpdateIdentityCertWatcher(
     const std::string& cert_name,
     grpc_tls_certificate_distributor* identity_cert_distributor) {
-  auto watcher = absl::make_unique<IdentityCertificatesWatcher>(
+  auto watcher = std::make_unique<IdentityCertificatesWatcher>(
       xds_certificate_provider_->distributor_, cert_name);
   identity_cert_watcher_ = watcher.get();
   identity_cert_distributor->WatchTlsCertificates(
@@ -288,9 +287,9 @@ void XdsCertificateProvider::UpdateRootCertNameAndDistributor(
   MutexLock lock(&mu_);
   auto it = certificate_state_map_.find(cert_name);
   if (it == certificate_state_map_.end()) {
-    it = certificate_state_map_
+    it =
-             .emplace(cert_name,
+        certificate_state_map_
-                      absl::make_unique<ClusterCertificateState>(this))
+            .emplace(cert_name, std::make_unique<ClusterCertificateState>(this))
             .first;
   }
   it->second->UpdateRootCertNameAndDistributor(cert_name, root_cert_name,
@@ -313,9 +312,9 @@ void XdsCertificateProvider::UpdateIdentityCertNameAndDistributor(
   MutexLock lock(&mu_);
   auto it = certificate_state_map_.find(cert_name);
   if (it == certificate_state_map_.end()) {
-    it = certificate_state_map_
+    it =
-             .emplace(cert_name,
+        certificate_state_map_
-                      absl::make_unique<ClusterCertificateState>(this))
+            .emplace(cert_name, std::make_unique<ClusterCertificateState>(this))
             .first;
   }
   it->second->UpdateIdentityCertNameAndDistributor(
@@ -364,9 +363,9 @@ void XdsCertificateProvider::WatchStatusCallback(std::string cert_name,
   MutexLock lock(&mu_);
   auto it = certificate_state_map_.find(cert_name);
   if (it == certificate_state_map_.end()) {
-    it = certificate_state_map_
+    it =
-             .emplace(cert_name,
+        certificate_state_map_
-                      absl::make_unique<ClusterCertificateState>(this))
+            .emplace(cert_name, std::make_unique<ClusterCertificateState>(this))
             .first;
   }
   it->second->WatchStatusCallback(cert_name, root_being_watched,

src/core/ext/xds/xds_client.cc

@@ -23,7 +23,6 @@
 
 #include <algorithm>
 
-#include "absl/memory/memory.h"
 #include "absl/strings/match.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/str_format.h"
@@ -880,7 +879,7 @@ XdsClient::ChannelState::AdsCallState::AdsCallState(
           : "/envoy.service.discovery.v2.AggregatedDiscoveryService/"
             "StreamAggregatedResources";
   call_ = chand()->transport_->CreateStreamingCall(
-      method, absl::make_unique<StreamEventHandler>(
+      method, std::make_unique<StreamEventHandler>(
                   // Passing the initial ref here.  This ref will go away when
                   // the StreamEventHandler is destroyed.
                   RefCountedPtr<AdsCallState>(this)));
@@ -1269,7 +1268,7 @@ XdsClient::ChannelState::LrsCallState::LrsCallState(
                            : "/envoy.service.load_stats.v2."
                              "LoadReportingService/StreamLoadStats";
   call_ = chand()->transport_->CreateStreamingCall(
-      method, absl::make_unique<StreamEventHandler>(
+      method, std::make_unique<StreamEventHandler>(
                   // Passing the initial ref here.  This ref will go away when
                   // the StreamEventHandler is destroyed.
                   RefCountedPtr<LrsCallState>(this)));

src/core/ext/xds/xds_cluster.cc

@@ -22,7 +22,6 @@
 
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -541,7 +540,7 @@ XdsResourceType::DecodeResult XdsClusterResourceType::Decode(
       gpr_log(GPR_INFO, "[xds_client %p] parsed Cluster %s: %s", context.client,
               result.name->c_str(), cds_resource->ToString().c_str());
     }
-    auto resource = absl::make_unique<ResourceDataSubclass>();
+    auto resource = std::make_unique<ResourceDataSubclass>();
     resource->resource = std::move(*cds_resource);
     result.resource = std::move(resource);
   }

src/core/ext/xds/xds_cluster_specifier_plugin.cc

@@ -24,7 +24,6 @@
 #include <map>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/strings/str_cat.h"
 #include "upb/json_encode.h"
@@ -140,7 +139,7 @@ void XdsClusterSpecifierPluginRegistry::RegisterPlugin(
 
 void XdsClusterSpecifierPluginRegistry::Init() {
   g_plugin_registry = new PluginRegistryMap;
-  RegisterPlugin(absl::make_unique<XdsRouteLookupClusterSpecifierPlugin>(),
+  RegisterPlugin(std::make_unique<XdsRouteLookupClusterSpecifierPlugin>(),
                  kXdsRouteLookupClusterSpecifierPluginConfigName);
 }
 

src/core/ext/xds/xds_endpoint.cc

@@ -23,7 +23,6 @@
 #include <algorithm>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -212,7 +211,7 @@ absl::optional<ServerAddress> ServerAddressParse(
   std::map<const char*, std::unique_ptr<ServerAddress::AttributeInterface>>
       attributes;
   attributes[ServerAddressWeightAttribute::kServerAddressWeightAttributeKey] =
-      absl::make_unique<ServerAddressWeightAttribute>(weight);
+      std::make_unique<ServerAddressWeightAttribute>(weight);
   return ServerAddress(grpc_address, ChannelArgs(), std::move(attributes));
 }
 
@@ -424,7 +423,7 @@ XdsResourceType::DecodeResult XdsEndpointResourceType::Decode(
               context.client, result.name->c_str(),
               eds_resource->ToString().c_str());
     }
-    auto resource = absl::make_unique<ResourceDataSubclass>();
+    auto resource = std::make_unique<ResourceDataSubclass>();
     resource->resource = std::move(*eds_resource);
     result.resource = std::move(resource);
   }

src/core/ext/xds/xds_http_filters.cc

@@ -23,7 +23,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "envoy/extensions/filters/http/router/v3/router.upb.h"
 #include "envoy/extensions/filters/http/router/v3/router.upbdefs.h"
@@ -111,13 +110,13 @@ void XdsHttpFilterRegistry::PopulateSymtab(upb_DefPool* symtab) {
 void XdsHttpFilterRegistry::Init() {
   g_filters = new FilterOwnerList;
   g_filter_registry = new FilterRegistryMap;
-  RegisterFilter(absl::make_unique<XdsHttpRouterFilter>(),
+  RegisterFilter(std::make_unique<XdsHttpRouterFilter>(),
                  {kXdsHttpRouterFilterConfigName});
-  RegisterFilter(absl::make_unique<XdsHttpFaultFilter>(),
+  RegisterFilter(std::make_unique<XdsHttpFaultFilter>(),
                  {kXdsHttpFaultFilterConfigName});
-  RegisterFilter(absl::make_unique<XdsHttpRbacFilter>(),
+  RegisterFilter(std::make_unique<XdsHttpRbacFilter>(),
                  {kXdsHttpRbacFilterConfigName});
-  RegisterFilter(absl::make_unique<XdsHttpRbacFilter>(),
+  RegisterFilter(std::make_unique<XdsHttpRbacFilter>(),
                  {kXdsHttpRbacFilterConfigOverrideName});
 }
 

src/core/ext/xds/xds_lb_policy_registry.cc

@@ -24,7 +24,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/str_format.h"
@@ -272,13 +271,13 @@ absl::StatusOr<Json::Array> XdsLbPolicyRegistry::ConvertXdsLbPolicyConfig(
 XdsLbPolicyRegistry::XdsLbPolicyRegistry() {
   policy_config_factories_.emplace(
       RingHashLbPolicyConfigFactory::Type(),
-      absl::make_unique<RingHashLbPolicyConfigFactory>());
+      std::make_unique<RingHashLbPolicyConfigFactory>());
   policy_config_factories_.emplace(
       RoundRobinLbPolicyConfigFactory::Type(),
-      absl::make_unique<RoundRobinLbPolicyConfigFactory>());
+      std::make_unique<RoundRobinLbPolicyConfigFactory>());
   policy_config_factories_.emplace(
       WrrLocalityLbPolicyConfigFactory::Type(),
-      absl::make_unique<WrrLocalityLbPolicyConfigFactory>());
+      std::make_unique<WrrLocalityLbPolicyConfigFactory>());
 }
 
 XdsLbPolicyRegistry* XdsLbPolicyRegistry::Get() {

src/core/ext/xds/xds_listener.cc

@@ -23,7 +23,6 @@
 #include <set>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -1092,7 +1091,7 @@ XdsResourceType::DecodeResult XdsListenerResourceType::Decode(
               context.client, result.name->c_str(),
               listener->ToString().c_str());
     }
-    auto resource = absl::make_unique<ResourceDataSubclass>();
+    auto resource = std::make_unique<ResourceDataSubclass>();
     resource->resource = std::move(*listener);
     result.resource = std::move(resource);
   }

src/core/ext/xds/xds_route_config.cc

@@ -28,7 +28,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -143,7 +142,7 @@ XdsRouteConfigResource::Route::RouteAction::HashPolicy::HashPolicy(
       regex_substitution(other.regex_substitution) {
   if (other.regex != nullptr) {
     regex =
-        absl::make_unique<RE2>(other.regex->pattern(), other.regex->options());
+        std::make_unique<RE2>(other.regex->pattern(), other.regex->options());
   }
 }
 
@@ -154,7 +153,7 @@ XdsRouteConfigResource::Route::RouteAction::HashPolicy::operator=(
   header_name = other.header_name;
   if (other.regex != nullptr) {
     regex =
-        absl::make_unique<RE2>(other.regex->pattern(), other.regex->options());
+        std::make_unique<RE2>(other.regex->pattern(), other.regex->options());
   }
   regex_substitution = other.regex_substitution;
   return *this;
@@ -887,7 +886,7 @@ absl::StatusOr<XdsRouteConfigResource::Route::RouteAction> RouteActionParse(
           continue;
         }
         RE2::Options options;
-        policy.regex = absl::make_unique<RE2>(
+        policy.regex = std::make_unique<RE2>(
             UpbStringToStdString(
                 envoy_type_matcher_v3_RegexMatcher_regex(regex_matcher)),
             options);
@@ -1141,7 +1140,7 @@ XdsResourceType::DecodeResult XdsRouteConfigResourceType::Decode(
               context.client, result.name->c_str(),
               rds_update->ToString().c_str());
     }
-    auto resource = absl::make_unique<ResourceDataSubclass>();
+    auto resource = std::make_unique<ResourceDataSubclass>();
     resource->resource = std::move(*rds_update);
     result.resource = std::move(resource);
   }

src/core/lib/channel/promise_based_filter.cc

@@ -20,7 +20,6 @@
 #include <string>
 
 #include "absl/base/attributes.h"
-#include "absl/memory/memory.h"
 #include "absl/types/variant.h"
 
 #include <grpc/status.h>
@@ -445,7 +444,7 @@ class ClientCallData::PollContext {
       };
       // Unique ptr --> release to suppress clang-tidy warnings about allocating
       // in a destructor.
-      auto* p = absl::make_unique<NextPoll>().release();
+      auto* p = std::make_unique<NextPoll>().release();
       p->call_stack = self_->call_stack();
       p->call_data = self_;
       GRPC_CALL_STACK_REF(self_->call_stack(), "re-poll");
@@ -912,7 +911,7 @@ class ServerCallData::PollContext {
         GRPC_CALL_STACK_UNREF(next_poll->call_stack, "re-poll");
         delete next_poll;
       };
-      auto* p = absl::make_unique<NextPoll>().release();
+      auto* p = std::make_unique<NextPoll>().release();
       p->call_stack = self_->call_stack();
       p->call_data = self_;
       GRPC_CALL_STACK_REF(self_->call_stack(), "re-poll");

src/core/lib/event_engine/default_event_engine_factory.cc

@@ -18,8 +18,6 @@
 
 #include <memory>
 
-#include "absl/memory/memory.h"
-
 #include <grpc/event_engine/event_engine.h>
 
 #ifdef GPR_WINDOWS
@@ -29,7 +27,7 @@ namespace grpc_event_engine {
 namespace experimental {
 
 std::unique_ptr<EventEngine> DefaultEventEngineFactory() {
-  return absl::make_unique<WindowsEventEngine>();
+  return std::make_unique<WindowsEventEngine>();
 }
 
 }  // namespace experimental
@@ -41,7 +39,7 @@ namespace grpc_event_engine {
 namespace experimental {
 
 std::unique_ptr<EventEngine> DefaultEventEngineFactory() {
-  return absl::make_unique<PosixEventEngine>();
+  return std::make_unique<PosixEventEngine>();
 }
 
 }  // namespace experimental

src/core/lib/event_engine/posix_engine/ev_epoll1_linux.cc

@@ -20,7 +20,6 @@
 #include <atomic>
 #include <memory>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 
@@ -70,11 +69,10 @@ class Epoll1EventHandle : public EventHandle {
       : fd_(fd),
         list_(this),
         poller_(poller),
-        read_closure_(absl::make_unique<LockfreeEvent>(poller->GetScheduler())),
+        read_closure_(std::make_unique<LockfreeEvent>(poller->GetScheduler())),
-        write_closure_(
+        write_closure_(std::make_unique<LockfreeEvent>(poller->GetScheduler())),
-            absl::make_unique<LockfreeEvent>(poller->GetScheduler())),
         error_closure_(
-            absl::make_unique<LockfreeEvent>(poller->GetScheduler())) {
+            std::make_unique<LockfreeEvent>(poller->GetScheduler())) {
     read_closure_->InitEvent();
     write_closure_->InitEvent();
     error_closure_->InitEvent();

src/core/lib/event_engine/posix_engine/timer_manager.cc

@@ -23,7 +23,6 @@
 #include <memory>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/time/time.h"
 #include "absl/types/optional.h"
 
@@ -201,7 +200,7 @@ void TimerManager::Run() {
 bool TimerManager::IsTimerManagerThread() { return g_timer_thread; }
 
 TimerManager::TimerManager() : host_(this) {
-  timer_list_ = absl::make_unique<TimerList>(&host_);
+  timer_list_ = std::make_unique<TimerList>(&host_);
   grpc_core::MutexLock lock(&mu_);
   StartThread();
 }

src/core/lib/event_engine/posix_engine/wakeup_fd_eventfd.cc

@@ -16,7 +16,6 @@
 
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
 
@@ -92,7 +91,7 @@ absl::StatusOr<std::unique_ptr<WakeupFd>>
 EventFdWakeupFd::CreateEventFdWakeupFd() {
   static bool kIsEventFdWakeupFdSupported = EventFdWakeupFd::IsSupported();
   if (kIsEventFdWakeupFdSupported) {
-    auto event_fd_wakeup_fd = absl::make_unique<EventFdWakeupFd>();
+    auto event_fd_wakeup_fd = std::make_unique<EventFdWakeupFd>();
     auto status = event_fd_wakeup_fd->Init();
     if (status.ok()) {
       return std::unique_ptr<WakeupFd>(std::move(event_fd_wakeup_fd));

src/core/lib/event_engine/posix_engine/wakeup_fd_pipe.cc

@@ -17,7 +17,6 @@
 #include <memory>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
 
@@ -120,7 +119,7 @@ bool PipeWakeupFd::IsSupported() {
 absl::StatusOr<std::unique_ptr<WakeupFd>> PipeWakeupFd::CreatePipeWakeupFd() {
   static bool kIsPipeWakeupFdSupported = PipeWakeupFd::IsSupported();
   if (kIsPipeWakeupFdSupported) {
-    auto pipe_wakeup_fd = absl::make_unique<PipeWakeupFd>();
+    auto pipe_wakeup_fd = std::make_unique<PipeWakeupFd>();
     auto status = pipe_wakeup_fd->Init();
     if (status.ok()) {
       return std::unique_ptr<WakeupFd>(std::move(pipe_wakeup_fd));

src/core/lib/iomgr/iomgr_posix.cc

@@ -38,8 +38,7 @@ extern grpc_pollset_vtable grpc_posix_pollset_vtable;
 extern grpc_pollset_set_vtable grpc_posix_pollset_set_vtable;
 
 static void iomgr_platform_init(void) {
-  grpc_core::ResetDNSResolver(
+  grpc_core::ResetDNSResolver(std::make_unique<grpc_core::NativeDNSResolver>());
-      absl::make_unique<grpc_core::NativeDNSResolver>());
   grpc_wakeup_fd_global_init();
   grpc_event_engine_init();
   grpc_tcp_posix_init();

src/core/lib/iomgr/iomgr_posix_cfstream.cc

@@ -180,8 +180,7 @@ void grpc_set_default_iomgr_platform() {
   }
   grpc_tcp_client_global_init();
   grpc_set_timer_impl(&grpc_generic_timer_vtable);
-  grpc_core::ResetDNSResolver(
+  grpc_core::ResetDNSResolver(std::make_unique<grpc_core::NativeDNSResolver>());
-      absl::make_unique<grpc_core::NativeDNSResolver>());
 }
 
 bool grpc_iomgr_run_in_background() {

src/core/lib/iomgr/iomgr_windows.cc

@@ -61,8 +61,7 @@ static void iomgr_platform_init(void) {
   grpc_iocp_init();
   grpc_pollset_global_init();
   grpc_wsa_socket_flags_init();
-  grpc_core::ResetDNSResolver(
+  grpc_core::ResetDNSResolver(std::make_unique<grpc_core::NativeDNSResolver>());
-      absl::make_unique<grpc_core::NativeDNSResolver>());
 }
 
 static void iomgr_platform_flush(void) { grpc_iocp_flush(); }

src/core/lib/matchers/matchers.cc

@@ -18,7 +18,6 @@
 
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/strings/ascii.h"
 #include "absl/strings/match.h"
@@ -35,7 +34,7 @@ absl::StatusOr<StringMatcher> StringMatcher::Create(Type type,
                                                     absl::string_view matcher,
                                                     bool case_sensitive) {
   if (type == Type::kSafeRegex) {
-    auto regex_matcher = absl::make_unique<RE2>(std::string(matcher));
+    auto regex_matcher = std::make_unique<RE2>(std::string(matcher));
     if (!regex_matcher->ok()) {
       return absl::InvalidArgumentError(
           "Invalid regex string specified in matcher.");
@@ -56,7 +55,7 @@ StringMatcher::StringMatcher(std::unique_ptr<RE2> regex_matcher)
 StringMatcher::StringMatcher(const StringMatcher& other)
     : type_(other.type_), case_sensitive_(other.case_sensitive_) {
   if (type_ == Type::kSafeRegex) {
-    regex_matcher_ = absl::make_unique<RE2>(other.regex_matcher_->pattern());
+    regex_matcher_ = std::make_unique<RE2>(other.regex_matcher_->pattern());
   } else {
     string_matcher_ = other.string_matcher_;
   }
@@ -65,7 +64,7 @@ StringMatcher::StringMatcher(const StringMatcher& other)
 StringMatcher& StringMatcher::operator=(const StringMatcher& other) {
   type_ = other.type_;
   if (type_ == Type::kSafeRegex) {
-    regex_matcher_ = absl::make_unique<RE2>(other.regex_matcher_->pattern());
+    regex_matcher_ = std::make_unique<RE2>(other.regex_matcher_->pattern());
   } else {
     string_matcher_ = other.string_matcher_;
   }

src/core/lib/resolver/server_address.h

@@ -29,8 +29,6 @@
 #include <string>
 #include <vector>
 
-#include "absl/memory/memory.h"
-
 #include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/gpr/useful.h"
 #include "src/core/lib/iomgr/resolved_address.h"
@@ -127,7 +125,7 @@ class ServerAddressWeightAttribute : public ServerAddress::AttributeInterface {
   uint32_t weight() const { return weight_; }
 
   std::unique_ptr<AttributeInterface> Copy() const override {
-    return absl::make_unique<ServerAddressWeightAttribute>(weight_);
+    return std::make_unique<ServerAddressWeightAttribute>(weight_);
   }
 
   int Cmp(const AttributeInterface* other) const override {

src/core/lib/security/authorization/cel_authorization_engine.cc

@@ -21,7 +21,6 @@
 #include <algorithm>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/strings/string_view.h"
 #include "absl/types/optional.h"
 #include "absl/types/span.h"
@@ -63,7 +62,7 @@ CelAuthorizationEngine::CreateCelAuthorizationEngine(
                          policy and one allow policy, in that order.");
     return nullptr;
   } else {
-    return absl::make_unique<CelAuthorizationEngine>(rbac_policies);
+    return std::make_unique<CelAuthorizationEngine>(rbac_policies);
   }
 }
 

src/core/lib/security/authorization/grpc_authorization_engine.cc

@@ -20,8 +20,6 @@
 #include <map>
 #include <utility>
 
-#include "absl/memory/memory.h"
-
 namespace grpc_core {
 
 GrpcAuthorizationEngine::GrpcAuthorizationEngine(Rbac policy)
@@ -29,7 +27,7 @@ GrpcAuthorizationEngine::GrpcAuthorizationEngine(Rbac policy)
   for (auto& sub_policy : policy.policies) {
     Policy policy;
     policy.name = sub_policy.first;
-    policy.matcher = absl::make_unique<PolicyAuthorizationMatcher>(
+    policy.matcher = std::make_unique<PolicyAuthorizationMatcher>(
         std::move(sub_policy.second));
     policies_.push_back(std::move(policy));
   }

src/core/lib/security/authorization/grpc_authorization_policy_provider.cc

@@ -20,8 +20,6 @@
 
 #include <utility>
 
-#include "absl/memory/memory.h"
-
 #include <grpc/grpc_security.h>
 #include <grpc/impl/codegen/gpr_types.h>
 #include <grpc/slice.h>
@@ -123,7 +121,7 @@ FileWatcherAuthorizationPolicyProvider::FileWatcherAuthorizationPolicyProvider(
       }
     }
   };
-  refresh_thread_ = absl::make_unique<Thread>(
+  refresh_thread_ = std::make_unique<Thread>(
       "FileWatcherAuthorizationPolicyProvider_refreshing_thread", thread_lambda,
       WeakRef().release());
   refresh_thread_->Start();

src/core/lib/security/authorization/matchers.cc

@@ -21,7 +21,6 @@
 #include <algorithm>
 #include <string>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/string_view.h"
@@ -42,35 +41,35 @@ std::unique_ptr<AuthorizationMatcher> AuthorizationMatcher::Create(
       for (const auto& rule : permission.permissions) {
         matchers.push_back(AuthorizationMatcher::Create(std::move(*rule)));
       }
-      return absl::make_unique<AndAuthorizationMatcher>(std::move(matchers));
+      return std::make_unique<AndAuthorizationMatcher>(std::move(matchers));
     }
     case Rbac::Permission::RuleType::kOr: {
       std::vector<std::unique_ptr<AuthorizationMatcher>> matchers;
       for (const auto& rule : permission.permissions) {
         matchers.push_back(AuthorizationMatcher::Create(std::move(*rule)));
       }
-      return absl::make_unique<OrAuthorizationMatcher>(std::move(matchers));
+      return std::make_unique<OrAuthorizationMatcher>(std::move(matchers));
     }
     case Rbac::Permission::RuleType::kNot:
-      return absl::make_unique<NotAuthorizationMatcher>(
+      return std::make_unique<NotAuthorizationMatcher>(
           AuthorizationMatcher::Create(std::move(*permission.permissions[0])));
     case Rbac::Permission::RuleType::kAny:
-      return absl::make_unique<AlwaysAuthorizationMatcher>();
+      return std::make_unique<AlwaysAuthorizationMatcher>();
     case Rbac::Permission::RuleType::kHeader:
-      return absl::make_unique<HeaderAuthorizationMatcher>(
+      return std::make_unique<HeaderAuthorizationMatcher>(
           std::move(permission.header_matcher));
     case Rbac::Permission::RuleType::kPath:
-      return absl::make_unique<PathAuthorizationMatcher>(
+      return std::make_unique<PathAuthorizationMatcher>(
           std::move(permission.string_matcher));
     case Rbac::Permission::RuleType::kDestIp:
-      return absl::make_unique<IpAuthorizationMatcher>(
+      return std::make_unique<IpAuthorizationMatcher>(
           IpAuthorizationMatcher::Type::kDestIp, std::move(permission.ip));
     case Rbac::Permission::RuleType::kDestPort:
-      return absl::make_unique<PortAuthorizationMatcher>(permission.port);
+      return std::make_unique<PortAuthorizationMatcher>(permission.port);
     case Rbac::Permission::RuleType::kMetadata:
-      return absl::make_unique<MetadataAuthorizationMatcher>(permission.invert);
+      return std::make_unique<MetadataAuthorizationMatcher>(permission.invert);
     case Rbac::Permission::RuleType::kReqServerName:
-      return absl::make_unique<ReqServerNameAuthorizationMatcher>(
+      return std::make_unique<ReqServerNameAuthorizationMatcher>(
           std::move(permission.string_matcher));
   }
   return nullptr;
@@ -84,41 +83,41 @@ std::unique_ptr<AuthorizationMatcher> AuthorizationMatcher::Create(
       for (const auto& id : principal.principals) {
         matchers.push_back(AuthorizationMatcher::Create(std::move(*id)));
       }
-      return absl::make_unique<AndAuthorizationMatcher>(std::move(matchers));
+      return std::make_unique<AndAuthorizationMatcher>(std::move(matchers));
     }
     case Rbac::Principal::RuleType::kOr: {
       std::vector<std::unique_ptr<AuthorizationMatcher>> matchers;
       for (const auto& id : principal.principals) {
         matchers.push_back(AuthorizationMatcher::Create(std::move(*id)));
       }
-      return absl::make_unique<OrAuthorizationMatcher>(std::move(matchers));
+      return std::make_unique<OrAuthorizationMatcher>(std::move(matchers));
     }
     case Rbac::Principal::RuleType::kNot:
-      return absl::make_unique<NotAuthorizationMatcher>(
+      return std::make_unique<NotAuthorizationMatcher>(
           AuthorizationMatcher::Create(std::move(*principal.principals[0])));
     case Rbac::Principal::RuleType::kAny:
-      return absl::make_unique<AlwaysAuthorizationMatcher>();
+      return std::make_unique<AlwaysAuthorizationMatcher>();
     case Rbac::Principal::RuleType::kPrincipalName:
-      return absl::make_unique<AuthenticatedAuthorizationMatcher>(
+      return std::make_unique<AuthenticatedAuthorizationMatcher>(
           std::move(principal.string_matcher));
     case Rbac::Principal::RuleType::kSourceIp:
-      return absl::make_unique<IpAuthorizationMatcher>(
+      return std::make_unique<IpAuthorizationMatcher>(
           IpAuthorizationMatcher::Type::kSourceIp, std::move(principal.ip));
     case Rbac::Principal::RuleType::kDirectRemoteIp:
-      return absl::make_unique<IpAuthorizationMatcher>(
+      return std::make_unique<IpAuthorizationMatcher>(
           IpAuthorizationMatcher::Type::kDirectRemoteIp,
           std::move(principal.ip));
     case Rbac::Principal::RuleType::kRemoteIp:
-      return absl::make_unique<IpAuthorizationMatcher>(
+      return std::make_unique<IpAuthorizationMatcher>(
           IpAuthorizationMatcher::Type::kRemoteIp, std::move(principal.ip));
     case Rbac::Principal::RuleType::kHeader:
-      return absl::make_unique<HeaderAuthorizationMatcher>(
+      return std::make_unique<HeaderAuthorizationMatcher>(
           std::move(principal.header_matcher));
     case Rbac::Principal::RuleType::kPath:
-      return absl::make_unique<PathAuthorizationMatcher>(
+      return std::make_unique<PathAuthorizationMatcher>(
           std::move(principal.string_matcher.value()));
     case Rbac::Principal::RuleType::kMetadata:
-      return absl::make_unique<MetadataAuthorizationMatcher>(principal.invert);
+      return std::make_unique<MetadataAuthorizationMatcher>(principal.invert);
   }
   return nullptr;
 }

src/core/lib/security/authorization/mock_cel/cel_expr_builder_factory.h

@@ -19,8 +19,6 @@
 
 #include <memory>
 
-#include "absl/memory/memory.h"
-
 #include "src/core/lib/security/authorization/mock_cel/cel_expression.h"
 #include "src/core/lib/security/authorization/mock_cel/flat_expr_builder.h"
 
@@ -36,7 +34,7 @@ struct InterpreterOptions {
 
 inline std::unique_ptr<CelExpressionBuilder> CreateCelExpressionBuilder(
     const InterpreterOptions& options) {
-  return absl::make_unique<FlatExprBuilder>();
+  return std::make_unique<FlatExprBuilder>();
 }
 
 }  // namespace mock_cel

src/core/lib/security/authorization/mock_cel/cel_value.h

@@ -38,7 +38,6 @@
 #include <string>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/strings/string_view.h"
 #include "absl/types/span.h"
 
@@ -93,7 +92,7 @@ class ContainerBackedMapImpl : public CelMap {
 
   static std::unique_ptr<CelMap> Create(
       absl::Span<std::pair<CelValue, CelValue>> /*key_values*/) {
-    return absl::make_unique<ContainerBackedMapImpl>();
+    return std::make_unique<ContainerBackedMapImpl>();
   }
 };
 

src/core/lib/security/authorization/mock_cel/flat_expr_builder.h

@@ -22,7 +22,6 @@
 #include <string>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "google/api/expr/v1alpha1/syntax.upb.h"
@@ -46,7 +45,7 @@ class FlatExprBuilder : public CelExpressionBuilder {
       const google_api_expr_v1alpha1_Expr* expr,
       const google_api_expr_v1alpha1_SourceInfo* source_info) const override {
     ExecutionPath path;
-    return absl::make_unique<CelExpressionFlatImpl>(nullptr, path, 0,
+    return std::make_unique<CelExpressionFlatImpl>(nullptr, path, 0,
                                                    std::set<std::string>{});
   }
 
@@ -55,7 +54,7 @@ class FlatExprBuilder : public CelExpressionBuilder {
       const google_api_expr_v1alpha1_SourceInfo* source_info,
       std::vector<absl::Status>* warnings) const override {
     ExecutionPath path;
-    return absl::make_unique<CelExpressionFlatImpl>(nullptr, path, 0,
+    return std::make_unique<CelExpressionFlatImpl>(nullptr, path, 0,
                                                    std::set<std::string>{});
   }
 };

src/core/lib/security/authorization/rbac_policy.cc

@@ -19,7 +19,6 @@
 #include <algorithm>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/strings/str_format.h"
 #include "absl/strings/str_join.h"
 
@@ -99,7 +98,7 @@ Rbac::Permission Rbac::Permission::MakeNotPermission(Permission permission) {
   Permission not_permission;
   not_permission.type = Permission::RuleType::kNot;
   not_permission.permissions.push_back(
-      absl::make_unique<Rbac::Permission>(std::move(permission)));
+      std::make_unique<Rbac::Permission>(std::move(permission)));
   return not_permission;
 }
 
@@ -271,7 +270,7 @@ Rbac::Principal Rbac::Principal::MakeNotPrincipal(Principal principal) {
   Principal not_principal;
   not_principal.type = Principal::RuleType::kNot;
   not_principal.principals.push_back(
-      absl::make_unique<Rbac::Principal>(std::move(principal)));
+      std::make_unique<Rbac::Principal>(std::move(principal)));
   return not_principal;
 }
 

src/core/lib/security/authorization/rbac_translator.cc

@@ -25,7 +25,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/strings/match.h"
 #include "absl/strings/str_cat.h"
@@ -103,7 +102,7 @@ absl::StatusOr<Rbac::Principal> ParsePrincipalsArray(const Json& json) {
                           absl::StrCat("\"principals\" ", i, ": ",
                                        matcher_or.status().message()));
     }
-    principal_names.push_back(absl::make_unique<Rbac::Principal>(
+    principal_names.push_back(std::make_unique<Rbac::Principal>(
         Rbac::Principal::MakeAuthenticatedPrincipal(
             std::move(matcher_or.value()))));
   }
@@ -120,7 +119,7 @@ absl::StatusOr<Rbac::Principal> ParsePeer(const Json& json) {
     auto principal_names_or = ParsePrincipalsArray(it->second);
     if (!principal_names_or.ok()) return principal_names_or.status();
     if (!principal_names_or.value().principals.empty()) {
-      peer.push_back(absl::make_unique<Rbac::Principal>(
+      peer.push_back(std::make_unique<Rbac::Principal>(
           std::move(principal_names_or.value())));
     }
   }
@@ -148,7 +147,7 @@ absl::StatusOr<Rbac::Permission> ParseHeaderValues(
           matcher_or.status().code(),
           absl::StrCat("\"values\" ", i, ": ", matcher_or.status().message()));
     }
-    values.push_back(absl::make_unique<Rbac::Permission>(
+    values.push_back(std::make_unique<Rbac::Permission>(
         Rbac::Permission::MakeHeaderPermission(std::move(matcher_or.value()))));
   }
   return Rbac::Permission::MakeOrPermission(std::move(values));
@@ -194,7 +193,7 @@ absl::StatusOr<Rbac::Permission> ParseHeadersArray(const Json& json) {
           absl::StrCat("\"headers\" ", i, ": ", headers_or.status().message()));
     }
     headers.push_back(
-        absl::make_unique<Rbac::Permission>(std::move(headers_or.value())));
+        std::make_unique<Rbac::Permission>(std::move(headers_or.value())));
   }
   return Rbac::Permission::MakeAndPermission(std::move(headers));
 }
@@ -213,7 +212,7 @@ absl::StatusOr<Rbac::Permission> ParsePathsArray(const Json& json) {
           matcher_or.status().code(),
           absl::StrCat("\"paths\" ", i, ": ", matcher_or.status().message()));
     }
-    paths.push_back(absl::make_unique<Rbac::Permission>(
+    paths.push_back(std::make_unique<Rbac::Permission>(
         Rbac::Permission::MakePathPermission(std::move(matcher_or.value()))));
   }
   return Rbac::Permission::MakeOrPermission(std::move(paths));
@@ -230,7 +229,7 @@ absl::StatusOr<Rbac::Permission> ParseRequest(const Json& json) {
     if (!paths_or.ok()) return paths_or.status();
     if (!paths_or.value().permissions.empty()) {
       request.push_back(
-          absl::make_unique<Rbac::Permission>(std::move(paths_or.value())));
+          std::make_unique<Rbac::Permission>(std::move(paths_or.value())));
     }
   }
   it = json.object_value().find("headers");
@@ -242,7 +241,7 @@ absl::StatusOr<Rbac::Permission> ParseRequest(const Json& json) {
     if (!headers_or.ok()) return headers_or.status();
     if (!headers_or.value().permissions.empty()) {
       request.push_back(
-          absl::make_unique<Rbac::Permission>(std::move(headers_or.value())));
+          std::make_unique<Rbac::Permission>(std::move(headers_or.value())));
     }
   }
   if (request.empty()) {

src/core/lib/security/credentials/channel_creds_registry_init.cc

@@ -20,7 +20,6 @@
 
 #include <memory>
 
-#include "absl/memory/memory.h"
 #include "absl/strings/string_view.h"
 
 #include <grpc/grpc.h>
@@ -71,11 +70,11 @@ class FakeChannelCredsFactory : public ChannelCredsFactory<> {
 
 void RegisterChannelDefaultCreds(CoreConfiguration::Builder* builder) {
   builder->channel_creds_registry()->RegisterChannelCredsFactory(
-      absl::make_unique<GoogleDefaultChannelCredsFactory>());
+      std::make_unique<GoogleDefaultChannelCredsFactory>());
   builder->channel_creds_registry()->RegisterChannelCredsFactory(
-      absl::make_unique<InsecureChannelCredsFactory>());
+      std::make_unique<InsecureChannelCredsFactory>());
   builder->channel_creds_registry()->RegisterChannelCredsFactory(
-      absl::make_unique<FakeChannelCredsFactory>());
+      std::make_unique<FakeChannelCredsFactory>());
 }
 
 }  // namespace grpc_core

src/core/lib/security/credentials/external/aws_external_account_credentials.cc

@@ -22,7 +22,6 @@
 #include <map>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -465,7 +464,7 @@ void AwsExternalAccountCredentials::BuildSubjectToken() {
   if (signer_ == nullptr) {
     cred_verification_url_ = absl::StrReplaceAll(
         regional_cred_verification_url_, {{"{region}", region_}});
-    signer_ = absl::make_unique<AwsRequestSigner>(
+    signer_ = std::make_unique<AwsRequestSigner>(
         access_key_id_, secret_access_key_, token_, "POST",
         cred_verification_url_, region_, "",
         std::map<std::string, std::string>(), &error);

src/core/lib/security/security_connector/tls/tls_security_connector.cc

@@ -28,7 +28,6 @@
 #include <vector>
 
 #include "absl/functional/bind_front.h"
-#include "absl/memory/memory.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
 
@@ -285,7 +284,7 @@ TlsChannelSecurityConnector::TlsChannelSecurityConnector(
   SplitHostPort(target_name, &host, &port);
   target_name_ = std::string(host);
   // Create a watcher.
-  auto watcher_ptr = absl::make_unique<TlsChannelCertificateWatcher>(this);
+  auto watcher_ptr = std::make_unique<TlsChannelCertificateWatcher>(this);
   certificate_watcher_ = watcher_ptr.get();
   // Register the watcher with the distributor.
   grpc_tls_certificate_distributor* distributor =
@@ -587,7 +586,7 @@ TlsServerSecurityConnector::TlsServerSecurityConnector(
         tsi::TlsSessionKeyLoggerCache::Get(tls_session_key_log_file_path);
   }
   // Create a watcher.
-  auto watcher_ptr = absl::make_unique<TlsServerCertificateWatcher>(this);
+  auto watcher_ptr = std::make_unique<TlsServerCertificateWatcher>(this);
   certificate_watcher_ = watcher_ptr.get();
   // Register the watcher with the distributor.
   grpc_tls_certificate_distributor* distributor =

src/core/lib/security/transport/security_handshaker.cc

@@ -29,7 +29,6 @@
 #include <string>
 
 #include "absl/base/attributes.h"
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
@@ -656,10 +655,10 @@ RefCountedPtr<Handshaker> SecurityHandshakerCreate(
 void SecurityRegisterHandshakerFactories(CoreConfiguration::Builder* builder) {
   builder->handshaker_registry()->RegisterHandshakerFactory(
       false /* at_start */, HANDSHAKER_CLIENT,
-      absl::make_unique<ClientSecurityHandshakerFactory>());
+      std::make_unique<ClientSecurityHandshakerFactory>());
   builder->handshaker_registry()->RegisterHandshakerFactory(
       false /* at_start */, HANDSHAKER_SERVER,
-      absl::make_unique<ServerSecurityHandshakerFactory>());
+      std::make_unique<ServerSecurityHandshakerFactory>());
 }
 
 }  // namespace grpc_core

src/core/lib/service_config/service_config_impl.cc

@@ -24,7 +24,6 @@
 #include <string>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -97,7 +96,7 @@ absl::Status ServiceConfigImpl::ParseJsonMethodConfig(const ChannelArgs& args,
     errors.emplace_back(parsed_configs_or.status().message());
   } else {
     auto parsed_configs =
-        absl::make_unique<ServiceConfigParser::ParsedConfigVector>(
+        std::make_unique<ServiceConfigParser::ParsedConfigVector>(
             std::move(*parsed_configs_or));
     parsed_method_config_vectors_storage_.push_back(std::move(parsed_configs));
     vector_ptr = parsed_method_config_vectors_storage_.back().get();

src/core/lib/surface/lame_client.cc

@@ -23,7 +23,6 @@
 #include <memory>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "absl/status/statusor.h"
 
 #include <grpc/grpc.h>
@@ -67,7 +66,7 @@ absl::StatusOr<LameClientFilter> LameClientFilter::Create(
 }
 
 LameClientFilter::LameClientFilter(absl::Status error)
-    : error_(std::move(error)), state_(absl::make_unique<State>()) {}
+    : error_(std::move(error)), state_(std::make_unique<State>()) {}
 
 LameClientFilter::State::State()
     : state_tracker("lame_client", GRPC_CHANNEL_SHUTDOWN) {}

src/core/lib/surface/server.cc

@@ -30,7 +30,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/types/optional.h"
 
@@ -562,11 +561,11 @@ void Server::Start() {
     }
   }
   if (unregistered_request_matcher_ == nullptr) {
-    unregistered_request_matcher_ = absl::make_unique<RealRequestMatcher>(this);
+    unregistered_request_matcher_ = std::make_unique<RealRequestMatcher>(this);
   }
   for (std::unique_ptr<RegisteredMethod>& rm : registered_methods_) {
     if (rm->matcher == nullptr) {
-      rm->matcher = absl::make_unique<RealRequestMatcher>(this);
+      rm->matcher = std::make_unique<RealRequestMatcher>(this);
     }
   }
   {
@@ -633,7 +632,7 @@ void Server::SetRegisteredMethodAllocator(
     grpc_completion_queue* cq, void* method_tag,
     std::function<RegisteredCallAllocation()> allocator) {
   RegisteredMethod* rm = static_cast<RegisteredMethod*>(method_tag);
-  rm->matcher = absl::make_unique<AllocatingRequestMatcherRegistered>(
+  rm->matcher = std::make_unique<AllocatingRequestMatcherRegistered>(
       this, cq, rm, std::move(allocator));
 }
 
@@ -641,7 +640,7 @@ void Server::SetBatchMethodAllocator(
     grpc_completion_queue* cq, std::function<BatchCallAllocation()> allocator) {
   GPR_DEBUG_ASSERT(unregistered_request_matcher_ == nullptr);
   unregistered_request_matcher_ =
-      absl::make_unique<AllocatingRequestMatcherBatch>(this, cq,
+      std::make_unique<AllocatingRequestMatcherBatch>(this, cq,
                                                       std::move(allocator));
 }
 
@@ -683,7 +682,7 @@ Server::RegisteredMethod* Server::RegisterMethod(
             flags);
     return nullptr;
   }
-  registered_methods_.emplace_back(absl::make_unique<RegisteredMethod>(
+  registered_methods_.emplace_back(std::make_unique<RegisteredMethod>(
       method, host, payload_handling, flags));
   return registered_methods_.back().get();
 }
@@ -1015,7 +1014,7 @@ void Server::ChannelData::InitTransport(RefCountedPtr<Server> server,
     uint32_t max_probes = 0;
     size_t slots = 2 * num_registered_methods;
     registered_methods_ =
-        absl::make_unique<std::vector<ChannelRegisteredMethod>>(slots);
+        std::make_unique<std::vector<ChannelRegisteredMethod>>(slots);
     for (std::unique_ptr<RegisteredMethod>& rm : server_->registered_methods_) {
       Slice host;
       Slice method = Slice::FromExternalString(rm->method);

src/core/lib/surface/server.h

@@ -31,7 +31,6 @@
 #include <vector>
 
 #include "absl/base/thread_annotations.h"
-#include "absl/memory/memory.h"
 #include "absl/status/statusor.h"
 #include "absl/types/optional.h"
 
@@ -426,7 +425,7 @@ class Server : public InternallyRefCounted<Server>,
       MaybeFinishShutdown();
       return nullptr;
     }
-    requests_complete_ = absl::make_unique<Notification>();
+    requests_complete_ = std::make_unique<Notification>();
     return requests_complete_.get();
   }
 

src/core/lib/transport/http_connect_handshaker.cc

@@ -27,7 +27,6 @@
 #include <string>
 
 #include "absl/base/thread_annotations.h"
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
@@ -394,7 +393,7 @@ class HttpConnectHandshakerFactory : public HandshakerFactory {
 void RegisterHttpConnectHandshaker(CoreConfiguration::Builder* builder) {
   builder->handshaker_registry()->RegisterHandshakerFactory(
       true /* at_start */, HANDSHAKER_CLIENT,
-      absl::make_unique<HttpConnectHandshakerFactory>());
+      std::make_unique<HttpConnectHandshakerFactory>());
 }
 
 }  // namespace grpc_core

src/core/lib/transport/tcp_connect_handshaker.cc

@@ -23,7 +23,6 @@
 #include <memory>
 
 #include "absl/base/thread_annotations.h"
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/string_view.h"
@@ -241,7 +240,7 @@ class TCPConnectHandshakerFactory : public HandshakerFactory {
 void RegisterTCPConnectHandshaker(CoreConfiguration::Builder* builder) {
   builder->handshaker_registry()->RegisterHandshakerFactory(
       true /* at_start */, HANDSHAKER_CLIENT,
-      absl::make_unique<TCPConnectHandshakerFactory>());
+      std::make_unique<TCPConnectHandshakerFactory>());
 }
 
 }  // namespace grpc_core

src/core/tsi/ssl/session_cache/ssl_session_boringssl.cc

@@ -51,7 +51,7 @@ class BoringSslCachedSession : public SslCachedSession {
 
 std::unique_ptr<SslCachedSession> SslCachedSession::Create(
     SslSessionPtr session) {
-  return absl::make_unique<BoringSslCachedSession>(std::move(session));
+  return std::make_unique<BoringSslCachedSession>(std::move(session));
 }
 
 }  // namespace tsi

src/core/tsi/ssl/session_cache/ssl_session_openssl.cc

@@ -73,7 +73,7 @@ class OpenSslCachedSession : public SslCachedSession {
 
 std::unique_ptr<SslCachedSession> SslCachedSession::Create(
     SslSessionPtr session) {
-  return absl::make_unique<OpenSslCachedSession>(std::move(session));
+  return std::make_unique<OpenSslCachedSession>(std::move(session));
 }
 
 }  // namespace tsi

src/cpp/common/alts_util.cc

@@ -21,7 +21,6 @@
 #include <string>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "upb/upb.hpp"
 
 #include <grpc/grpc_security_constants.h>
@@ -63,7 +62,7 @@ std::unique_ptr<AltsContext> GetAltsContextFromAuthContext(
     gpr_log(GPR_ERROR, "security_level is invalid.");
     return nullptr;
   }
-  return absl::make_unique<AltsContext>(AltsContext(ctx));
+  return std::make_unique<AltsContext>(AltsContext(ctx));
 }
 
 grpc::Status AltsClientAuthzCheck(

src/cpp/server/health/default_health_check_service.cc

@@ -23,7 +23,6 @@
 #include <memory>
 #include <utility>
 
-#include "absl/memory/memory.h"
 #include "upb/upb.h"
 #include "upb/upb.hpp"
 
@@ -111,7 +110,7 @@ void DefaultHealthCheckService::UnregisterWatch(
 DefaultHealthCheckService::HealthCheckServiceImpl*
 DefaultHealthCheckService::GetHealthCheckService() {
   GPR_ASSERT(impl_ == nullptr);
-  impl_ = absl::make_unique<HealthCheckServiceImpl>(this);
+  impl_ = std::make_unique<HealthCheckServiceImpl>(this);
   return impl_.get();
 }
 

src/cpp/server/load_reporter/load_reporter_async_service_impl.cc

@@ -25,8 +25,6 @@
 #include <google/protobuf/duration.pb.h>
 #include <google/protobuf/repeated_ptr_field.h>
 
-#include "absl/memory/memory.h"
-
 #include <grpc/impl/codegen/gpr_types.h>
 #include <grpc/support/time.h>
 #include <grpcpp/support/status.h>
@@ -46,12 +44,12 @@ LoadReporterAsyncServiceImpl::LoadReporterAsyncServiceImpl(
     std::unique_ptr<ServerCompletionQueue> cq)
     : cq_(std::move(cq)) {
   thread_ =
-      absl::make_unique<grpc_core::Thread>("server_load_reporting", Work, this);
+      std::make_unique<grpc_core::Thread>("server_load_reporting", Work, this);
   std::unique_ptr<CpuStatsProvider> cpu_stats_provider = nullptr;
 #if defined(GPR_LINUX) || defined(GPR_WINDOWS) || defined(GPR_APPLE)
-  cpu_stats_provider = absl::make_unique<CpuStatsProviderDefaultImpl>();
+  cpu_stats_provider = std::make_unique<CpuStatsProviderDefaultImpl>();
 #endif
-  load_reporter_ = absl::make_unique<LoadReporter>(
+  load_reporter_ = std::make_unique<LoadReporter>(
       kFeedbackSampleWindowSeconds,
       std::unique_ptr<CensusViewProvider>(new CensusViewProviderDefaultImpl()),
       std::move(cpu_stats_provider));
@@ -80,7 +78,7 @@ void LoadReporterAsyncServiceImpl::ScheduleNextFetchAndSample() {
     if (shutdown_) return;
     // TODO(juanlishen): Improve the Alarm implementation to reuse a single
     // instance for multiple events.
-    next_fetch_and_sample_alarm_ = absl::make_unique<Alarm>();
+    next_fetch_and_sample_alarm_ = std::make_unique<Alarm>();
     next_fetch_and_sample_alarm_->Set(cq_.get(), next_fetch_and_sample_time,
                                       this);
   }
@@ -280,7 +278,7 @@ void LoadReporterAsyncServiceImpl::ReportLoadHandler::ScheduleNextReport(
                     std::move(self));
     // TODO(juanlishen): Improve the Alarm implementation to reuse a single
     // instance for multiple events.
-    next_report_alarm_ = absl::make_unique<Alarm>();
+    next_report_alarm_ = std::make_unique<Alarm>();
     next_report_alarm_->Set(cq_, next_report_time, &next_outbound_);
   }
   gpr_log(GPR_DEBUG,

src/cpp/server/orca/orca_interceptor.cc

@@ -23,7 +23,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/strings/string_view.h"
 #include "absl/types/optional.h"
 
@@ -67,7 +66,7 @@ Interceptor* OrcaServerInterceptorFactory::CreateServerInterceptor(
 
 void OrcaServerInterceptorFactory::Register(grpc::ServerBuilder* builder) {
   builder->internal_interceptor_creators_.push_back(
-      absl::make_unique<OrcaServerInterceptorFactory>());
+      std::make_unique<OrcaServerInterceptorFactory>());
 }
 
 void EnableCallMetricRecording(grpc::ServerBuilder* builder) {

src/cpp/server/server_cc.cc

@@ -28,7 +28,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 
 #include <grpc/byte_buffer.h>
@@ -827,7 +826,7 @@ class Server::SyncRequestThreadManager : public grpc::ThreadManager {
 
   void AddUnknownSyncMethod() {
     if (has_sync_method_) {
-      unknown_method_ = absl::make_unique<grpc::internal::RpcServiceMethod>(
+      unknown_method_ = std::make_unique<grpc::internal::RpcServiceMethod>(
           "unknown", grpc::internal::RpcMethod::BIDI_STREAMING,
           new grpc::internal::UnknownMethodHandler(kUnknownRpcMethod));
       grpc_core::Server::FromC(server_->server())
@@ -1149,7 +1148,7 @@ void Server::Start(grpc::ServerCompletionQueue** cqs, size_t num_cqs) {
   // explicit one.
   if (health_check_service_ == nullptr && !health_check_service_disabled_ &&
       grpc::DefaultHealthCheckServiceEnabled()) {
-    auto default_hc_service = absl::make_unique<DefaultHealthCheckService>();
+    auto default_hc_service = std::make_unique<DefaultHealthCheckService>();
     auto* hc_service_impl = default_hc_service->GetHealthCheckService();
     health_check_service_ = std::move(default_hc_service);
     RegisterService(nullptr, hc_service_impl);
@@ -1182,7 +1181,7 @@ void Server::Start(grpc::ServerCompletionQueue** cqs, size_t num_cqs) {
   bool unknown_rpc_needed =
       !has_async_generic_service_ && !has_callback_generic_service_;
   if (unknown_rpc_needed && has_callback_methods_) {
-    unimplemented_service_ = absl::make_unique<grpc::CallbackGenericService>();
+    unimplemented_service_ = std::make_unique<grpc::CallbackGenericService>();
     RegisterCallbackGenericService(unimplemented_service_.get());
     unknown_rpc_needed = false;
   }
@@ -1207,7 +1206,7 @@ void Server::Start(grpc::ServerCompletionQueue** cqs, size_t num_cqs) {
   // to deal with the case of thread exhaustion
   if (sync_server_cqs_ != nullptr && !sync_server_cqs_->empty()) {
     resource_exhausted_handler_ =
-        absl::make_unique<grpc::internal::ResourceExhaustedHandler>(
+        std::make_unique<grpc::internal::ResourceExhaustedHandler>(
             kServerThreadpoolExhausted);
   }
 

test/core/channel/channelz_test.cc

@@ -465,8 +465,8 @@ TEST_F(ChannelzRegistryBasedTest, GetTopChannelsUuidAfterCompaction) {
     // these will delete and unregister themselves after this block.
     std::vector<std::unique_ptr<ChannelFixture>> odd_channels;
     for (int i = 0; i < kLoopIterations; i++) {
-      odd_channels.push_back(absl::make_unique<ChannelFixture>());
+      odd_channels.push_back(std::make_unique<ChannelFixture>());
-      even_channels.push_back(absl::make_unique<ChannelFixture>());
+      even_channels.push_back(std::make_unique<ChannelFixture>());
     }
   }
   std::string json_str = ChannelzRegistry::GetTopChannels(0);

test/core/client_channel/resolvers/binder_resolver_test.cc

@@ -112,7 +112,7 @@ class BinderResolverTest : public ::testing::Test {
     grpc_core::ResolverArgs args;
     args.uri = std::move(*uri);
     args.result_handler =
-        absl::make_unique<BinderResolverTest::ResultHandler>(expected_path);
+        std::make_unique<BinderResolverTest::ResultHandler>(expected_path);
     grpc_core::OrphanablePtr<grpc_core::Resolver> resolver =
         factory_->CreateResolver(std::move(args));
     ASSERT_TRUE(resolver != nullptr);
@@ -127,8 +127,7 @@ class BinderResolverTest : public ::testing::Test {
     ASSERT_TRUE(uri.ok()) << uri.status().ToString();
     grpc_core::ResolverArgs args;
     args.uri = std::move(*uri);
-    args.result_handler =
+    args.result_handler = std::make_unique<BinderResolverTest::ResultHandler>();
-        absl::make_unique<BinderResolverTest::ResultHandler>();
     grpc_core::OrphanablePtr<grpc_core::Resolver> resolver =
         factory_->CreateResolver(std::move(args));
     EXPECT_TRUE(resolver == nullptr);

test/core/client_channel/resolvers/dns_resolver_cooldown_test.cc

@@ -391,7 +391,7 @@ TEST(DnsResolverCooldownTest, MainTest) {
   g_default_dns_lookup_ares = grpc_dns_lookup_hostname_ares;
   grpc_dns_lookup_hostname_ares = test_dns_lookup_ares;
   grpc_core::ResetDNSResolver(
-      absl::make_unique<TestDNSResolver>(grpc_core::GetDNSResolver()));
+      std::make_unique<TestDNSResolver>(grpc_core::GetDNSResolver()));
 
   test_cooldown();
 

test/core/client_channel/resolvers/dns_resolver_test.cc

@@ -52,7 +52,7 @@ static void test_succeeds(grpc_core::ResolverFactory* factory,
   grpc_core::ResolverArgs args;
   args.uri = std::move(*uri);
   args.work_serializer = *g_work_serializer;
-  args.result_handler = absl::make_unique<TestResultHandler>();
+  args.result_handler = std::make_unique<TestResultHandler>();
   grpc_core::OrphanablePtr<grpc_core::Resolver> resolver =
       factory->CreateResolver(std::move(args));
   ASSERT_NE(resolver, nullptr);
@@ -71,7 +71,7 @@ static void test_fails(grpc_core::ResolverFactory* factory,
   grpc_core::ResolverArgs args;
   args.uri = std::move(*uri);
   args.work_serializer = *g_work_serializer;
-  args.result_handler = absl::make_unique<TestResultHandler>();
+  args.result_handler = std::make_unique<TestResultHandler>();
   grpc_core::OrphanablePtr<grpc_core::Resolver> resolver =
       factory->CreateResolver(std::move(args));
   ASSERT_EQ(resolver, nullptr);

test/core/client_channel/resolvers/sockaddr_resolver_test.cc

@@ -52,7 +52,7 @@ static void test_succeeds(grpc_core::ResolverFactory* factory,
   grpc_core::ResolverArgs args;
   args.uri = std::move(*uri);
   args.work_serializer = *g_work_serializer;
-  args.result_handler = absl::make_unique<ResultHandler>();
+  args.result_handler = std::make_unique<ResultHandler>();
   grpc_core::OrphanablePtr<grpc_core::Resolver> resolver =
       factory->CreateResolver(std::move(args));
   ASSERT_NE(resolver, nullptr);
@@ -75,7 +75,7 @@ static void test_fails(grpc_core::ResolverFactory* factory,
   grpc_core::ResolverArgs args;
   args.uri = std::move(*uri);
   args.work_serializer = *g_work_serializer;
-  args.result_handler = absl::make_unique<ResultHandler>();
+  args.result_handler = std::make_unique<ResultHandler>();
   grpc_core::OrphanablePtr<grpc_core::Resolver> resolver =
       factory->CreateResolver(std::move(args));
   ASSERT_EQ(resolver, nullptr);

test/core/client_channel/service_config_test.cc

@@ -77,7 +77,7 @@ class TestParser1 : public ServiceConfigParser::Parser {
       if (value == -1) {
         return absl::InvalidArgumentError(InvalidValueErrorMessage());
       }
-      return absl::make_unique<TestParsedConfig1>(value);
+      return std::make_unique<TestParsedConfig1>(value);
     }
     return nullptr;
   }
@@ -109,7 +109,7 @@ class TestParser2 : public ServiceConfigParser::Parser {
       if (value == -1) {
         return absl::InvalidArgumentError(InvalidValueErrorMessage());
       }
-      return absl::make_unique<TestParsedConfig1>(value);
+      return std::make_unique<TestParsedConfig1>(value);
     }
     return nullptr;
   }
@@ -155,9 +155,9 @@ class ServiceConfigTest : public ::testing::Test {
     builder_ = std::make_unique<CoreConfiguration::WithSubstituteBuilder>(
         [](CoreConfiguration::Builder* builder) {
           builder->service_config_parser()->RegisterParser(
-              absl::make_unique<TestParser1>());
+              std::make_unique<TestParser1>());
           builder->service_config_parser()->RegisterParser(
-              absl::make_unique<TestParser2>());
+              std::make_unique<TestParser2>());
         });
     EXPECT_EQ(CoreConfiguration::Get().service_config_parser().GetParserIndex(
                   "test_parser_1"),
@@ -411,9 +411,9 @@ TEST(ServiceConfigParserTest, DoubleRegistration) {
       CoreConfiguration::WithSubstituteBuilder builder(
           [](CoreConfiguration::Builder* builder) {
             builder->service_config_parser()->RegisterParser(
-                absl::make_unique<ErrorParser>("xyzabc"));
+                std::make_unique<ErrorParser>("xyzabc"));
             builder->service_config_parser()->RegisterParser(
-                absl::make_unique<ErrorParser>("xyzabc"));
+                std::make_unique<ErrorParser>("xyzabc"));
           }),
       "xyzabc.*already registered");
 }
@@ -425,9 +425,9 @@ class ErroredParsersScopingTest : public ::testing::Test {
     builder_ = std::make_unique<CoreConfiguration::WithSubstituteBuilder>(
         [](CoreConfiguration::Builder* builder) {
           builder->service_config_parser()->RegisterParser(
-              absl::make_unique<ErrorParser>("ep1"));
+              std::make_unique<ErrorParser>("ep1"));
           builder->service_config_parser()->RegisterParser(
-              absl::make_unique<ErrorParser>("ep2"));
+              std::make_unique<ErrorParser>("ep2"));
         });
     EXPECT_EQ(
         CoreConfiguration::Get().service_config_parser().GetParserIndex("ep1"),
@@ -755,7 +755,7 @@ class RetryParserTest : public ::testing::Test {
     builder_ = std::make_unique<CoreConfiguration::WithSubstituteBuilder>(
         [](CoreConfiguration::Builder* builder) {
           builder->service_config_parser()->RegisterParser(
-              absl::make_unique<internal::RetryServiceConfigParser>());
+              std::make_unique<internal::RetryServiceConfigParser>());
         });
     EXPECT_EQ(CoreConfiguration::Get().service_config_parser().GetParserIndex(
                   "retry"),
@@ -1449,7 +1449,7 @@ class MessageSizeParserTest : public ::testing::Test {
     builder_ = std::make_unique<CoreConfiguration::WithSubstituteBuilder>(
         [](CoreConfiguration::Builder* builder) {
           builder->service_config_parser()->RegisterParser(
-              absl::make_unique<MessageSizeParser>());
+              std::make_unique<MessageSizeParser>());
         });
     EXPECT_EQ(CoreConfiguration::Get().service_config_parser().GetParserIndex(
                   "message_size"),

test/core/end2end/BUILD

@@ -160,7 +160,6 @@ grpc_cc_test(
     name = "goaway_server_test",
     srcs = ["goaway_server_test.cc"],
     external_deps = [
-        "absl/memory",
         "absl/status",
         "absl/status:statusor",
         "absl/strings",
@@ -202,7 +201,6 @@ grpc_cc_test(
 grpc_cc_test(
     name = "invalid_call_argument_test",
     srcs = ["invalid_call_argument_test.cc"],
-    external_deps = ["absl/memory"],
     language = "C++",
     deps = [
         "cq_verifier",

test/core/end2end/fuzzers/api_fuzzer.cc

@@ -29,7 +29,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/string_view.h"
@@ -119,7 +118,7 @@ static void finish_resolve(void* arg, grpc_error_handle error) {
   addr_req* r = static_cast<addr_req*>(arg);
 
   if (error.ok() && 0 == strcmp(r->addr, "server")) {
-    *r->addresses = absl::make_unique<grpc_core::ServerAddressList>();
+    *r->addresses = std::make_unique<grpc_core::ServerAddressList>();
     grpc_resolved_address fake_resolved_address;
     GPR_ASSERT(
         grpc_parse_ipv4_hostport("1.2.3.4:5", &fake_resolved_address, false));
@@ -823,7 +822,7 @@ DEFINE_PROTO_FUZZER(const api_fuzzer::Msg& msg) {
 
   grpc_event_engine::experimental::SetEventEngineFactory(
       [actions = msg.event_engine_actions()]() {
-        return absl::make_unique<FuzzingEventEngine>(
+        return std::make_unique<FuzzingEventEngine>(
             FuzzingEventEngine::Options(), actions);
       });
   auto engine =
@@ -836,7 +835,7 @@ DEFINE_PROTO_FUZZER(const api_fuzzer::Msg& msg) {
     grpc_core::Executor::SetThreadingAll(false);
   }
   grpc_core::ResetDNSResolver(
-      absl::make_unique<FuzzerDNSResolver>(engine.get()));
+      std::make_unique<FuzzerDNSResolver>(engine.get()));
   grpc_dns_lookup_hostname_ares = my_dns_lookup_ares;
   grpc_cancel_ares_request = my_cancel_ares_request;
 

test/core/end2end/goaway_server_test.cc

@@ -26,7 +26,6 @@
 #include <utility>
 #include <vector>
 
-#include "absl/memory/memory.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/str_cat.h"
@@ -187,7 +186,7 @@ static grpc_ares_request* my_dns_lookup_ares(
     gpr_mu_unlock(&g_mu);
     error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Forced Failure");
   } else {
-    *addresses = absl::make_unique<grpc_core::ServerAddressList>();
+    *addresses = std::make_unique<grpc_core::ServerAddressList>();
     grpc_sockaddr_in sa;
     memset(&sa, 0, sizeof(sa));
     sa.sin_family = GRPC_AF_INET;
@@ -216,7 +215,7 @@ int main(int argc, char** argv) {
   gpr_mu_init(&g_mu);
   grpc_init();
   grpc_core::ResetDNSResolver(
-      absl::make_unique<TestDNSResolver>(grpc_core::GetDNSResolver()));
+      std::make_unique<TestDNSResolver>(grpc_core::GetDNSResolver()));
   iomgr_dns_lookup_ares = grpc_dns_lookup_hostname_ares;
   iomgr_cancel_ares_request = grpc_cancel_ares_request;
   grpc_dns_lookup_hostname_ares = my_dns_lookup_ares;

test/core/end2end/invalid_call_argument_test.cc

@@ -26,8 +26,6 @@
 #include <memory>
 #include <string>
 
-#include "absl/memory/memory.h"
-
 #include <grpc/byte_buffer.h>
 #include <grpc/grpc.h>
 #include <grpc/grpc_security.h>
@@ -72,7 +70,7 @@ static void prepare_test(int is_client) {
   grpc_metadata_array_init(&g_state.trailing_metadata_recv);
   g_state.deadline = grpc_timeout_seconds_to_deadline(5);
   g_state.cq = grpc_completion_queue_create_for_next(nullptr);
-  g_state.cqv = absl::make_unique<grpc_core::CqVerifier>(g_state.cq);
+  g_state.cqv = std::make_unique<grpc_core::CqVerifier>(g_state.cq);
   g_state.details = grpc_empty_slice();
   memset(g_state.ops, 0, sizeof(g_state.ops));