Remove GetOutputScaling from VoiceMediaChannel.

talk/media/base/fakemediaengine.h

 /*
  * libjingle
  * Copyright 2004 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 366 matching lines @@
         it->second.right = right;
       }
       return true;
     } else if (output_scalings_.find(ssrc) != output_scalings_.end()) {
       output_scalings_[ssrc].left = left;
       output_scalings_[ssrc].right = right;
       return true;
     }
     return false;
   }
-  virtual bool GetOutputScaling(uint32 ssrc, double* left, double* right) {
+  bool GetOutputScaling(uint32 ssrc, double* left, double* right) {
     if (output_scalings_.find(ssrc) == output_scalings_.end())
       return false;
     *left = output_scalings_[ssrc].left;
     *right = output_scalings_[ssrc].right;
     return true;
   }
 
   virtual bool GetStats(VoiceMediaInfo* info) { return false; }
   virtual void GetLastMediaError(uint32* ssrc,
                                  VoiceMediaChannel::Error* error) {
@@ skipping 654 matching lines @@
 
  private:
   std::vector<FakeDataMediaChannel*> channels_;
   std::vector<DataCodec> data_codecs_;
   DataChannelType last_channel_type_;
 };
 
 }  // namespace cricket
 
 #endif  // TALK_MEDIA_BASE_FAKEMEDIAENGINE_H_