Move logic for calculating needed bitrate overhead used by NACK and FEC to VideoSender.

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 118 matching lines @@
   }
 
   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.
-    if (enable)
-      sender_.SetVideoProtection(videoProtection);
     return receiver_.SetVideoProtection(videoProtection, enable);
   }
 
   int32_t AddVideoFrame(const VideoFrame& videoFrame,
                         const CodecSpecificInfo* codecSpecificInfo) override {
     return sender_.AddVideoFrame(videoFrame, codecSpecificInfo);
   }
 
   int32_t IntraFrameRequest(size_t stream_index) override {
     return sender_.IntraFrameRequest(stream_index);
@@ skipping 161 matching lines @@
     EventFactory* event_factory,
     NackSender* nack_sender,
     KeyFrameRequestSender* keyframe_request_sender) {
   assert(clock);
   assert(event_factory);
   return new VideoCodingModuleImpl(clock, event_factory, nullptr, nack_sender,
                                    keyframe_request_sender, nullptr);
 }
 
 }  // namespace webrtc