[WebSocket] bufferedAmount should not decrease inside a task.

Source/modules/websockets/ThreadableWebSocketChannelClientWrapper.h

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 31 matching lines @@
 
 class ThreadableWebSocketChannelClientWrapper : public ThreadSafeRefCountedWillBeGarbageCollected<ThreadableWebSocketChannelClientWrapper> {
 public:
     static PassRefPtrWillBeRawPtr<ThreadableWebSocketChannelClientWrapper> create(WebSocketChannelClient*);
 
     void clearClient();
 
     void didConnect(const String& subprotocol, const String& extensions);
     void didReceiveMessage(const String& message);
     void didReceiveBinaryData(PassOwnPtr<Vector<char> >);
-    void didUpdateBufferedAmount(unsigned long bufferedAmount);
+    void didConsumeBufferedAmount(unsigned long);
     void didStartClosingHandshake();
-    void didClose(unsigned long unhandledBufferedAmount, WebSocketChannelClient::ClosingHandshakeCompletionStatus, unsigned short code, const String& reason);
+    void didClose(WebSocketChannelClient::ClosingHandshakeCompletionStatus, unsigned short code, const String& reason);
     void didReceiveMessageError();
 
     void trace(Visitor*) { }
 
 private:
     ThreadableWebSocketChannelClientWrapper(WebSocketChannelClient*);
 
     WebSocketChannelClient* m_client;
 };
 
 } // namespace WebCore
 
 #endif // ThreadableWebSocketChannelClientWrapper_h