Move BitrateAdjuster into common_video

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")
 
 source_set("video_coding") {
   sources = [
-    "bitrate_adjuster.cc",
-    "bitrate_adjuster.h",
     "codec_database.cc",
     "codec_database.h",
     "codec_timer.cc",
     "codec_timer.h",
     "content_metrics_processing.cc",
     "content_metrics_processing.h",
     "decoding_state.cc",
     "decoding_state.h",
     "encoded_frame.cc",
     "encoded_frame.h",
@@ skipping 236 matching lines @@
 
   deps = [
     ":video_coding_utility",
     "../../common_video",
     "../../system_wrappers",
   ]
   if (rtc_build_libvpx) {
     deps += [ rtc_libvpx_dir ]
   }
 }