Delete I420 encoder and decoder.

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 76 matching lines @@
 
   if (is_clang) {
     # Suppress warnings from Chrome's Clang plugins.
     # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
     configs -= [ "//build/config/clang:find_bad_constructs" ]
   }
 
   deps = [
     ":video_coding_utility",
     ":webrtc_h264",
-    ":webrtc_i420",
     ":webrtc_vp8",
     ":webrtc_vp9",
     "../..:webrtc_common",
     "../../common_video",
     "../../system_wrappers",
   ]
 }
 
 source_set("video_coding_utility") {
   sources = [
@@ skipping 57 matching lines @@
       "../../common_video",
       "//third_party/ffmpeg:ffmpeg",
       "//third_party/openh264:encoder",
     ]
   }
 }
 
 # TODO(tkchin): Source set for webrtc_h264_video_toolbox. Currently not
 # possible to add, see https://crbug.com/297668.
 
-source_set("webrtc_i420") {
-  sources = [
-    "codecs/i420/i420.cc",
-    "codecs/i420/include/i420.h",
-  ]
-
-  configs += [ "../..:common_config" ]
-  public_configs = [ "../..:common_inherited_config" ]
-
-  if (is_clang) {
-    # Suppress warnings from Chrome's Clang plugins.
-    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
-    configs -= [ "//build/config/clang:find_bad_constructs" ]
-  }
-
-  deps = [
-    "../../system_wrappers",
-  ]
-}
-
 source_set("webrtc_vp8") {
   sources = [
     "codecs/vp8/default_temporal_layers.cc",
     "codecs/vp8/default_temporal_layers.h",
     "codecs/vp8/include/vp8.h",
     "codecs/vp8/include/vp8_common_types.h",
     "codecs/vp8/realtime_temporal_layers.cc",
     "codecs/vp8/reference_picture_selection.cc",
     "codecs/vp8/reference_picture_selection.h",
     "codecs/vp8/screenshare_layers.cc",
@@ skipping 54 matching lines @@
 
   deps = [
     ":video_coding_utility",
     "../../common_video",
     "../../system_wrappers",
   ]
   if (rtc_build_libvpx) {
     deps += [ rtc_libvpx_dir ]
   }
 }