Extract bitrate allocation of spatial/temporal layers out of codec impl.

webrtc/modules/video_coding/video_coding_impl.cc

 /*
  *  Copyright (c) 2012 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.
  */
 
@@ skipping 107 matching lines @@
   int Bitrate(unsigned int* bitrate) const override {
     return sender_.Bitrate(bitrate);
   }
 
   int FrameRate(unsigned int* framerate) const override {
     return sender_.FrameRate(framerate);
   }
 
   int32_t SetChannelParameters(uint32_t target_bitrate,  // bits/s.
                                uint8_t lossRate,
-                               int64_t rtt) override {
-    return sender_.SetChannelParameters(target_bitrate, lossRate, rtt);
+                               int64_t rtt,
+                               VideoBitrateAllocator* allocator) override {
+    return sender_.SetChannelParameters(target_bitrate, lossRate, rtt,
+                                        allocator);
   }
 
   int32_t RegisterProtectionCallback(
       VCMProtectionCallback* protection) override {
     return sender_.RegisterProtectionCallback(protection);
   }
 
   int32_t SetVideoProtection(VCMVideoProtection videoProtection,
                              bool enable) override {
     // TODO(pbos): Remove enable from receive-side protection modes as well.
@@ skipping 151 matching lines @@
     EventFactory* event_factory,
     NackSender* nack_sender,
     KeyFrameRequestSender* keyframe_request_sender) {
   assert(clock);
   assert(event_factory);
   return new VideoCodingModuleImpl(clock, event_factory, nack_sender,
                                    keyframe_request_sender, nullptr);
 }
 
 }  // namespace webrtc