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

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 0f8567963a06c837d2f111b84e8bfc0e5d80df5f..611206e325d2da7a284cc54ceb08de9a9d8fa003 100644
--- a/webrtc/modules/video_coding/include/video_coding.h
+++ b/webrtc/modules/video_coding/include/video_coding.h
@@ -188,14 +188,10 @@ class VideoCodingModule : public Module {
   //                     < 0,    on error.
   virtual int32_t SetReceiveChannelParameters(int64_t rtt) = 0;
 
+  // Deprecated: This method currently does not have any effect.
   // Register a video protection callback which will be called to deliver
   // the requested FEC rate and NACK status (on/off).
-  //
-  // Input:
-  //      - protection  : The callback object to register.
-  //
-  // Return value      : VCM_OK, on success.
-  //                     < 0,    on error.
+  // TODO(perkj): Remove once no projects use it.
   virtual int32_t RegisterProtectionCallback(
       VCMProtectionCallback* protection) = 0;