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

webrtc/modules/video_coding/codecs/vp8/simulcast_encoder_adapter.h

 /*
  *  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.
  *
  */
@@ skipping 31 matching lines @@
   int Release() override;
   int InitEncode(const VideoCodec* inst,
                  int number_of_cores,
                  size_t max_payload_size) override;
   int Encode(const VideoFrame& input_image,
              const CodecSpecificInfo* codec_specific_info,
              const std::vector<FrameType>* frame_types) override;
   int RegisterEncodeCompleteCallback(EncodedImageCallback* callback) override;
   int SetChannelParameters(uint32_t packet_loss, int64_t rtt) override;
   int SetRates(uint32_t new_bitrate_kbit, uint32_t new_framerate) override;
+  int SetRateAllocation(const BitrateAllocation& bitrate,
+                        uint32_t new_framerate) override;
 
   // Eventual handler for the contained encoders' EncodedImageCallbacks, but
   // called from an internal helper that also knows the correct stream
   // index.
   EncodedImageCallback::Result OnEncodedImage(
       size_t stream_idx,
       const EncodedImage& encoded_image,
       const CodecSpecificInfo* codec_specific_info,
       const RTPFragmentationHeader* fragmentation);
 
@@ skipping 34 matching lines @@
   // Populate the codec settings for each stream.
   void PopulateStreamCodec(const webrtc::VideoCodec* inst,
                            int stream_index,
                            uint32_t start_bitrate_kbps,
                            bool highest_resolution_stream,
                            webrtc::VideoCodec* stream_codec);
 
   bool Initialized() const;
 
   std::unique_ptr<VideoEncoderFactory> factory_;
-  std::unique_ptr<TemporalLayersFactory> screensharing_tl_factory_;
   VideoCodec codec_;
   std::vector<StreamInfo> streaminfos_;
   EncodedImageCallback* encoded_complete_callback_;
   std::string implementation_name_;
-  std::unique_ptr<SimulcastRateAllocator> rate_allocator_;
+  std::unique_ptr<SimulcastRateAllocator> fallback_rate_allocator_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_CODECS_VP8_SIMULCAST_ENCODER_ADAPTER_H_