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

webrtc/modules/video_coding/include/video_coding.h

Index: webrtc/modules/video_coding/include/video_coding.h
diff --git a/webrtc/modules/video_coding/include/video_coding.h b/webrtc/modules/video_coding/include/video_coding.h
index eeda8a2e34a03905ac3d0efffab6959e3b2358e5..2c86c80c8a510007457862f95bec7f329dd51dd8 100644
--- a/webrtc/modules/video_coding/include/video_coding.h
+++ b/webrtc/modules/video_coding/include/video_coding.h
@@ -35,6 +35,7 @@ class EncodedImageCallback;
 // removing the VCM and use VideoSender/VideoReceiver as a public interface
 // directly.
 class VCMQMSettingsCallback;
+class VideoBitrateAllocator;
 class VideoEncoder;
 class VideoDecoder;
 struct CodecSpecificInfo;
@@ -166,7 +167,8 @@ class VideoCodingModule : public Module {
   //                     < 0,         on error.
   virtual int32_t SetChannelParameters(uint32_t target_bitrate,
                                        uint8_t lossRate,
-                                       int64_t rtt) = 0;
+                                       int64_t rtt,

[perkj_webrtc, 2016/10/21 08:24:29]

We no longer use the module. Instead we use the sender directly.

[sprang_webrtc, 2016/10/25 10:44:25]

Acknowledged.

+                                       VideoBitrateAllocator* allocator) = 0;
 
   // Sets the parameters describing the receive channel. These parameters are
   // inputs to the