[iwyu] json (#29536)

* [iwyu] json

* fix

* Automated change: Fix sanity tests

* Automated change: Fix sanity tests

Co-authored-by: ctiller <ctiller@users.noreply.github.com>

BUILD

@@ -5198,6 +5198,7 @@ grpc_cc_library(
         "src/core/lib/json/json.h",
     ],
     external_deps = [
+        "absl/base:core_headers",
         "absl/strings",
         "absl/strings:str_format",
     ],

src/core/lib/json/json.h

@@ -25,6 +25,7 @@
 
 #include <map>
 #include <string>
+#include <utility>
 #include <vector>
 
 #include "absl/strings/string_view.h"

src/core/lib/json/json_reader.cc

@@ -18,15 +18,23 @@
 
 #include <grpc/support/port_platform.h>
 
-#include <string.h>
+#include <inttypes.h>
+#include <stdlib.h>
 
+#include <algorithm>
+#include <map>
 #include <string>
+#include <utility>
+#include <vector>
 
+#include "absl/base/attributes.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/str_format.h"
+#include "absl/strings/string_view.h"
 
 #include <grpc/support/log.h>
 
+#include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/json/json.h"
 
 #define GRPC_JSON_MAX_DEPTH 255

src/core/lib/json/json_util.cc

@@ -20,9 +20,12 @@
 
 #include "src/core/lib/json/json_util.h"
 
+#include <string.h>
+
 #include <grpc/support/string_util.h>
 
 #include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/memory.h"
 
 namespace grpc_core {
 

src/core/lib/json/json_util.h

@@ -21,9 +21,19 @@
 
 #include <grpc/support/port_platform.h>
 
+#include <algorithm>
+#include <map>
+#include <string>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
 #include "absl/strings/numbers.h"
 #include "absl/strings/str_cat.h"
+#include "absl/strings/string_view.h"
 
+#include "src/core/lib/gprpp/time.h"
+#include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/json/json.h"
 

src/core/lib/json/json_writer.cc

@@ -18,8 +18,13 @@
 
 #include <grpc/support/port_platform.h>
 
+#include <stdint.h>
 #include <stdlib.h>
-#include <string.h>
+
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
 
 #include "absl/strings/string_view.h"
 

tools/dockerfile/grpc_iwyu/iwyu.sh

@@ -32,6 +32,7 @@ export ENABLED_MODULES='
   src/core/lib/avl
   src/core/lib/channel
   src/core/lib/config
+  src/core/lib/json
   src/core/lib/slice
   src/core/lib/resource_quota
   src/core/lib/promise