Support for onbufferedamountlow

talk/app/webrtc/datachannelinterface.h

 /*
  * libjingle
  * Copyright 2012 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 71 matching lines @@
   // Indicates if the received data contains UTF-8 or binary data.
   // Note that the upper layers are left to verify the UTF-8 encoding.
   // TODO(jiayl): prefer to use an enum instead of a bool.
   bool binary;
 };
 
 class DataChannelObserver {
  public:
   // The data channel state have changed.
   virtual void OnStateChange() = 0;
+  // The data channel's buffered_amount has changed.
+  virtual void OnBufferedAmountChange(uint64 previous_amount) = 0;
   //  A data buffer was successfully received.
   virtual void OnMessage(const DataBuffer& buffer) = 0;
 
  protected:
   virtual ~DataChannelObserver() {}
 };
 
 class DataChannelInterface : public rtc::RefCountInterface {
  public:
   // Keep in sync with DataChannel.java:State and
@@ skipping 46 matching lines @@
   // Sends |data| to the remote peer.
   virtual bool Send(const DataBuffer& buffer) = 0;
 
  protected:
   virtual ~DataChannelInterface() {}
 };
 
 }  // namespace webrtc
 
 #endif  // TALK_APP_WEBRTC_DATACHANNELINTERFACE_H_