Move rtc_base/ignore_wundef.h to its own target.

Since rtc_base/ignore_wundef.h doesn't have any dependency, it is easy to
move it to its own target and allow its dependant to avoid to take a
dependency rtc_base:on rtc_base_approved.

Bug: webrtc:9419
Change-Id: I17f205b0cb2b21cad388b04e60082df9398dffdf
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/157428
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29548}
diff --git a/logging/BUILD.gn b/logging/BUILD.gn
index eb52c73..983b913 100644
--- a/logging/BUILD.gn
+++ b/logging/BUILD.gn
@@ -189,6 +189,7 @@
     "../api:rtp_parameters",
     "../api/transport:network_control",
     "../rtc_base:checks",
+    "../rtc_base:ignore_wundef",
     "../rtc_base:rtc_base_approved",
     "//third_party/abseil-cpp/absl/memory",
     "//third_party/abseil-cpp/absl/strings",
@@ -326,6 +327,7 @@
       "../modules/rtp_rtcp:rtp_rtcp_format",
       "../rtc_base:checks",
       "../rtc_base:deprecation",
+      "../rtc_base:ignore_wundef",
       "../rtc_base:protobuf_utils",
       "../rtc_base:rtc_base_approved",
       "../rtc_base:rtc_numerics",
diff --git a/modules/audio_coding/BUILD.gn b/modules/audio_coding/BUILD.gn
index 5eafc04..3b7c5f0 100644
--- a/modules/audio_coding/BUILD.gn
+++ b/modules/audio_coding/BUILD.gn
@@ -835,6 +835,7 @@
 
   deps = [
     "../../rtc_base:checks",
+    "../../rtc_base:ignore_wundef",
     "../../rtc_base:rtc_base_approved",
   ]
 }
@@ -907,6 +908,7 @@
     "../../common_audio",
     "../../logging:rtc_event_audio",
     "../../rtc_base:checks",
+    "../../rtc_base:ignore_wundef",
     "../../rtc_base:protobuf_utils",
     "../../rtc_base:rtc_base_approved",
     "../../rtc_base/system:file_wrapper",
@@ -2025,6 +2027,7 @@
       "../../modules/rtp_rtcp:rtp_rtcp_format",
       "../../rtc_base",
       "../../rtc_base:checks",
+      "../../rtc_base:ignore_wundef",
       "../../rtc_base:rtc_base_approved",
       "../../rtc_base:rtc_base_tests_utils",
       "../../rtc_base:sanitizer",
diff --git a/modules/audio_device/BUILD.gn b/modules/audio_device/BUILD.gn
index f827341..e21eecb 100644
--- a/modules/audio_device/BUILD.gn
+++ b/modules/audio_device/BUILD.gn
@@ -382,6 +382,7 @@
       "../../api/task_queue:default_task_queue_factory",
       "../../common_audio",
       "../../rtc_base:checks",
+      "../../rtc_base:ignore_wundef",
       "../../rtc_base:rtc_base_approved",
       "../../system_wrappers",
       "../../test:fileutils",
diff --git a/modules/audio_processing/BUILD.gn b/modules/audio_processing/BUILD.gn
index c813a46..f270416 100644
--- a/modules/audio_processing/BUILD.gn
+++ b/modules/audio_processing/BUILD.gn
@@ -182,6 +182,7 @@
     "../../rtc_base:checks",
     "../../rtc_base:deprecation",
     "../../rtc_base:gtest_prod",
+    "../../rtc_base:ignore_wundef",
     "../../rtc_base:safe_minmax",
     "../../rtc_base:sanitizer",
     "../../rtc_base/system:rtc_export",
@@ -437,6 +438,7 @@
       "../../rtc_base",
       "../../rtc_base:checks",
       "../../rtc_base:gtest_prod",
+      "../../rtc_base:ignore_wundef",
       "../../rtc_base:protobuf_utils",
       "../../rtc_base:rtc_base_approved",
       "../../rtc_base:rtc_base_tests_utils",
@@ -606,6 +608,7 @@
         "../../api/audio:aec3_factory",
         "../../common_audio",
         "../../rtc_base:checks",
+        "../../rtc_base:ignore_wundef",
         "../../rtc_base:protobuf_utils",
         "../../rtc_base:rtc_base_approved",
         "../../rtc_base:rtc_json",
@@ -723,6 +726,7 @@
       deps = [
         ":audioproc_debug_proto",
         "../../rtc_base:checks",
+        "../../rtc_base:ignore_wundef",
         "../../rtc_base:protobuf_utils",
         "../../rtc_base:rtc_base_approved",
         "../../rtc_base/system:arch",
diff --git a/modules/audio_processing/aec_dump/BUILD.gn b/modules/audio_processing/aec_dump/BUILD.gn
index 4ab14c6..ed4220e 100644
--- a/modules/audio_processing/aec_dump/BUILD.gn
+++ b/modules/audio_processing/aec_dump/BUILD.gn
@@ -68,6 +68,7 @@
       "../../../api/audio:audio_frame_api",
       "../../../api/task_queue",
       "../../../rtc_base:checks",
+      "../../../rtc_base:ignore_wundef",
       "../../../rtc_base:protobuf_utils",
       "../../../rtc_base:rtc_base_approved",
       "../../../rtc_base:rtc_task_queue",
diff --git a/modules/video_coding/BUILD.gn b/modules/video_coding/BUILD.gn
index 924e2fa..cd17c66 100644
--- a/modules/video_coding/BUILD.gn
+++ b/modules/video_coding/BUILD.gn
@@ -537,6 +537,7 @@
       deps = [
         "../../api/video_codecs:video_codecs_api",
         "../../rtc_base:checks",
+        "../../rtc_base:ignore_wundef",
         "../../rtc_base:rtc_base_approved",
         "../../sdk/android:native_api_base",
         "../../sdk/android:native_api_codecs",
diff --git a/rtc_base/BUILD.gn b/rtc_base/BUILD.gn
index b643344..f453ace 100644
--- a/rtc_base/BUILD.gn
+++ b/rtc_base/BUILD.gn
@@ -45,6 +45,12 @@
   ]
 }
 
+rtc_source_set("ignore_wundef") {
+  sources = [
+    "ignore_wundef.h",
+  ]
+}
+
 # The subset of rtc_base approved for use outside of libjingle.
 # TODO(bugs.webrtc.org/9838): Create small and focused build targets and remove
 # the old concept of rtc_base and rtc_base_approved.
@@ -79,7 +85,6 @@
     "copy_on_write_buffer.h",
     "event_tracer.cc",
     "event_tracer.h",
-    "ignore_wundef.h",
     "location.cc",
     "location.h",
     "message_buffer_reader.h",
diff --git a/rtc_tools/BUILD.gn b/rtc_tools/BUILD.gn
index 3e73f3a..5a8ffc3 100644
--- a/rtc_tools/BUILD.gn
+++ b/rtc_tools/BUILD.gn
@@ -280,6 +280,7 @@
       deps = [
         ":chart_proto",
         "../api:function_view",
+        "../rtc_base:ignore_wundef",
 
         # TODO(kwiberg): Remove this dependency.
         "../api/audio_codecs:audio_codecs_api",
@@ -442,6 +443,7 @@
         "../modules/audio_processing:audioproc_debug_proto",
         "../modules/audio_processing:audioproc_protobuf_utils",
         "../modules/audio_processing:audioproc_test_utils",
+        "../rtc_base:ignore_wundef",
         "../rtc_base:protobuf_utils",
         "../rtc_base:rtc_base_approved",
         "//third_party/abseil-cpp/absl/flags:flag",
diff --git a/rtc_tools/network_tester/BUILD.gn b/rtc_tools/network_tester/BUILD.gn
index 2851666..36fa185 100644
--- a/rtc_tools/network_tester/BUILD.gn
+++ b/rtc_tools/network_tester/BUILD.gn
@@ -48,6 +48,7 @@
       "../../p2p",
       "../../rtc_base",
       "../../rtc_base:checks",
+      "../../rtc_base:ignore_wundef",
       "../../rtc_base:protobuf_utils",
       "../../rtc_base:rtc_base_approved",
       "../../rtc_base:rtc_task_queue",
diff --git a/test/BUILD.gn b/test/BUILD.gn
index 9d3c9ae..b5542dd 100644
--- a/test/BUILD.gn
+++ b/test/BUILD.gn
@@ -236,6 +236,7 @@
 
   public_configs = [ ":test_main_direct_config" ]
   deps = [
+    "../rtc_base:ignore_wundef",
     "../rtc_base:rtc_base_approved",
     "//testing/gmock",
     "//testing/gtest",