[EventEngine] Enable Windows EventEngine Listener on all builds (#34436)

bazel/experiments.bzl

@@ -25,7 +25,6 @@ EXPERIMENTS = {
                 "rfc_max_concurrent_streams",
             ],
             "core_end2end_test": [
-                "event_engine_listener",
                 "promise_based_client_call",
                 "promise_based_server_call",
                 "work_serializer_dispatch",
@@ -38,9 +37,6 @@ EXPERIMENTS = {
                 "tcp_frame_size_tuning",
                 "tcp_rcv_lowat",
             ],
-            "event_engine_listener_test": [
-                "event_engine_listener",
-            ],
             "flow_control_test": [
                 "multiping",
                 "peer_state_based_framing",
@@ -73,6 +69,9 @@ EXPERIMENTS = {
                 "block_excessive_requests_before_settings_ack",
                 "tarpit",
             ],
+            "core_end2end_test": [
+                "event_engine_listener",
+            ],
             "cpp_end2end_test": [
                 "chttp2_batch_requests",
                 "chttp2_offload_on_rst_stream",
@@ -82,6 +81,9 @@ EXPERIMENTS = {
                 "round_robin_delegate_to_pick_first",
                 "wrr_delegate_to_pick_first",
             ],
+            "event_engine_listener_test": [
+                "event_engine_listener",
+            ],
             "flow_control_test": [
                 "chttp2_batch_requests",
                 "chttp2_offload_on_rst_stream",
@@ -113,7 +115,6 @@ EXPERIMENTS = {
                 "rfc_max_concurrent_streams",
             ],
             "core_end2end_test": [
-                "event_engine_listener",
                 "promise_based_client_call",
                 "promise_based_server_call",
                 "work_serializer_dispatch",
@@ -126,9 +127,6 @@ EXPERIMENTS = {
                 "tcp_frame_size_tuning",
                 "tcp_rcv_lowat",
             ],
-            "event_engine_listener_test": [
-                "event_engine_listener",
-            ],
             "flow_control_test": [
                 "multiping",
                 "peer_state_based_framing",

src/core/lib/experiments/experiments.cc

@@ -505,7 +505,7 @@ const ExperimentMetadata g_experiment_metadata[] = {
     {"event_engine_dns", description_event_engine_dns,
      additional_constraints_event_engine_dns, false, false},
     {"event_engine_listener", description_event_engine_listener,
-     additional_constraints_event_engine_listener, false, true},
+     additional_constraints_event_engine_listener, true, true},
     {"free_large_allocator", description_free_large_allocator,
      additional_constraints_free_large_allocator, false, true},
     {"keepalive_fix", description_keepalive_fix,

src/core/lib/experiments/experiments.h

@@ -156,7 +156,8 @@ inline bool IsClientPrivacyEnabled() { return false; }
 inline bool IsCombinerOffloadToEventEngineEnabled() { return true; }
 inline bool IsEventEngineClientEnabled() { return false; }
 inline bool IsEventEngineDnsEnabled() { return false; }
-inline bool IsEventEngineListenerEnabled() { return false; }
+#define GRPC_EXPERIMENT_IS_INCLUDED_EVENT_ENGINE_LISTENER
+inline bool IsEventEngineListenerEnabled() { return true; }
 inline bool IsFreeLargeAllocatorEnabled() { return false; }
 inline bool IsKeepaliveFixEnabled() { return false; }
 inline bool IsKeepaliveServerFixEnabled() { return false; }

src/core/lib/experiments/rollouts.yaml

@@ -69,7 +69,11 @@
     # implemented
     windows: broken
 - name: event_engine_listener
-  default: false
+  default:
+    # not tested on iOS at all
+    ios: broken
+    posix: false
+    windows: true
 - name: free_large_allocator
   default: false
 - name: jitter_max_idle