Remove warning suppression from VideoToolboxEncoder

webrtc/sdk/BUILD.gn

 # Copyright 2016 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../build/webrtc.gni")
 if (is_mac) {
@@ skipping 12 matching lines @@
   }
 }
 
 if (is_ios || is_mac) {
   config("rtc_sdk_common_objc_config") {
     include_dirs = [
       "objc/Framework/Classes",
       "objc/Framework/Headers",
     ]
   }
-  config("webrtc_h264_video_toolbox_warnings_config") {
-    if (is_clang) {
-      # TODO(tkchin): Make webrtc_h264_video_toolbox compile with the standard set
-      # of warnings.
-      # See https://bugs.chromium.org/p/webrtc/issues/detail?id=6307
-      cflags = [ "-Wno-thread-safety-analysis" ]
-    }
-  }
 
   rtc_static_library("rtc_sdk_common_objc") {
     deps = [
       "../base:rtc_base",
     ]
     configs += [
       "..:common_objc",
       "//build/config/compiler:enable_arc",
     ]
     public_configs = [ ":rtc_sdk_common_objc_config" ]
@@ skipping 327 matching lines @@
     sources = [
       "objc/Framework/Classes/h264_video_toolbox_decoder.cc",
       "objc/Framework/Classes/h264_video_toolbox_decoder.h",
       "objc/Framework/Classes/h264_video_toolbox_encoder.h",
       "objc/Framework/Classes/h264_video_toolbox_encoder.mm",
       "objc/Framework/Classes/h264_video_toolbox_nalu.cc",
       "objc/Framework/Classes/h264_video_toolbox_nalu.h",
     ]
 
     configs += [
-      ":webrtc_h264_video_toolbox_warnings_config",
       "//webrtc:common_objc",
       "//build/config/compiler:enable_arc",
     ]
 
     deps = [
       ":rtc_sdk_common_objc",
     ]
 
     libs = [
       "CoreFoundation.framework",
@@ skipping 11 matching lines @@
       deps += [ "$rtc_libyuv_dir" ]
       public_deps = [
         "$rtc_libyuv_dir",
       ]
     } else {
       # Need to add a directory normally exported by libyuv.
       include_dirs = [ "$rtc_libyuv_dir/include" ]
     }
   }
 }