Revert of Add a webrtc{en,de}coderfactory implementation for VideoToolbox

webrtc/modules/video_coding/BUILD.gn

 # Copyright (c) 2014 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")
 
@@ skipping 121 matching lines @@
   if (!build_with_chromium && is_clang) {
     # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
     suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
   }
 
   defines = []
   deps = [
     "../../system_wrappers",
   ]
 
+  if (is_ios) {
+    sources += [ "codecs/h264/h264_objc.mm" ]
+    deps += [ ":webrtc_h264_video_toolbox" ]
+  }
+
   if (rtc_use_h264) {
     defines += [ "WEBRTC_USE_H264" ]
     if (rtc_initialize_ffmpeg) {
       defines += [ "WEBRTC_INITIALIZE_FFMPEG" ]
     }
     sources += [
       "codecs/h264/h264_decoder_impl.cc",
       "codecs/h264/h264_decoder_impl.h",
       "codecs/h264/h264_encoder_impl.cc",
       "codecs/h264/h264_encoder_impl.h",
     ]
     deps += [
       "../../common_video",
       "//third_party/ffmpeg:ffmpeg",
       "//third_party/openh264:encoder",
     ]
   }
 }
 
+if (is_ios) {
+  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("webrtc_h264_video_toolbox") {
+    sources = [
+      "codecs/h264/h264_video_toolbox_decoder.cc",
+      "codecs/h264/h264_video_toolbox_decoder.h",
+      "codecs/h264/h264_video_toolbox_encoder.h",
+      "codecs/h264/h264_video_toolbox_encoder.mm",
+      "codecs/h264/h264_video_toolbox_nalu.cc",
+      "codecs/h264/h264_video_toolbox_nalu.h",
+    ]
+
+    configs += [
+      ":webrtc_h264_video_toolbox_warnings_config",
+      "../..:common_objc",
+      "//build/config/compiler:enable_arc",
+    ]
+
+    deps = [
+      "../../sdk:rtc_sdk_common_objc",
+    ]
+
+    libs = [
+      "CoreFoundation.framework",
+      "CoreMedia.framework",
+      "CoreVideo.framework",
+      "VideoToolbox.framework",
+    ]
+
+    if (!build_with_chromium && is_clang) {
+      # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
+      suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
+    }
+
+    if (rtc_build_libyuv) {
+      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" ]
+    }
+  }
+}
+
 rtc_static_library("webrtc_i420") {
   sources = [
     "codecs/i420/i420.cc",
     "codecs/i420/include/i420.h",
   ]
 
   if (!build_with_chromium && is_clang) {
     # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
     suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
   }
@@ skipping 90 matching lines @@
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
 
     deps = [
       "../../test:test_support",
     ]
   }
 }