Rename ChannelGroup to CongestionController and move to webrtc/call/.

webrtc/video/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") {
   sources = [
     "../video_engine/call_stats.cc",
     "../video_engine/call_stats.h",
     "../video_engine/encoder_state_feedback.cc",
     "../video_engine/encoder_state_feedback.h",
     "../video_engine/overuse_frame_detector.cc",
     "../video_engine/overuse_frame_detector.h",
     "../video_engine/payload_router.cc",
     "../video_engine/payload_router.h",
     "../video_engine/report_block_stats.cc",
     "../video_engine/report_block_stats.h",
     "../video_engine/stream_synchronization.cc",
     "../video_engine/stream_synchronization.h",
     "../video_engine/vie_channel.cc",
     "../video_engine/vie_channel.h",
-    "../video_engine/vie_channel_group.cc",
-    "../video_engine/vie_channel_group.h",
     "../video_engine/vie_defines.h",
     "../video_engine/vie_encoder.cc",
     "../video_engine/vie_encoder.h",
     "../video_engine/vie_receiver.cc",
     "../video_engine/vie_receiver.h",
     "../video_engine/vie_remb.cc",
     "../video_engine/vie_remb.h",
     "../video_engine/vie_sync_module.cc",
     "../video_engine/vie_sync_module.h",
     "encoded_frame_callback_adapter.cc",
@@ skipping 30 matching lines @@
     "../modules/rtp_rtcp",
     "../modules/utility",
     "../modules/video_capture:video_capture_module",
     "../modules/video_coding",
     "../modules/video_processing",
     "../modules/video_render:video_render_module",
     "../voice_engine",
     "../system_wrappers",
   ]
 }