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

webrtc/modules/video_coding/video_coding_impl.h

Index: webrtc/modules/video_coding/video_coding_impl.h
diff --git a/webrtc/modules/video_coding/video_coding_impl.h b/webrtc/modules/video_coding/video_coding_impl.h
index 053363454610cfdea6235f8903e2c5ce28e7b2b4..cb24654041aeb4a7e186f74ebe49c624167cd1f6 100644
--- a/webrtc/modules/video_coding/video_coding_impl.h
+++ b/webrtc/modules/video_coding/video_coding_impl.h
@@ -34,8 +34,6 @@
 
 namespace webrtc {
 
-class VideoBitrateAllocator;
-
 namespace vcm {
 
 class VCMProcessTimer {
@@ -77,15 +75,9 @@
   int Bitrate(unsigned int* bitrate) const;
   int FrameRate(unsigned int* framerate) const;
 
-  int32_t SetChannelParameters(uint32_t target_bitrate_bps,
+  int32_t SetChannelParameters(uint32_t target_bitrate,  // bits/s.
                                uint8_t lossRate,
-                               int64_t rtt,
-                               VideoBitrateAllocator* bitrate_allocator);
-  // Calls SetChannelParameters(), with the previous target bitrate, loss rate
-  // and RTT, but reallocates the bitrate allocation based on a presumably
-  // updated codec configuration.
-  int32_t UpdateChannelParemeters(VideoBitrateAllocator* bitrate_allocator);
-
+                               int64_t rtt);
   // Deprecated:
   // TODO(perkj): Remove once no projects use it.
   int32_t RegisterProtectionCallback(VCMProtectionCallback* protection);