[WebSocket] bufferedAmount should not decrease inside a task.

public/web/WebSocketClient.h

 /*
  * Copyright (C) 2011, 2012 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 28 matching lines @@
 class WebString;
 
 class WebSocketClient {
 public:
     enum ClosingHandshakeCompletionStatus {
         ClosingHandshakeIncomplete,
         ClosingHandshakeComplete
     };
 
     virtual ~WebSocketClient() { }
-    virtual void didConnect() { }
+    virtual void didConnect(const WebString& subprotocol, const WebString& extensions) { }
     virtual void didReceiveMessage(const WebString& message) { }
     virtual void didReceiveArrayBuffer(const WebArrayBuffer& arrayBuffer) { }
     virtual void didReceiveMessageError() { }
+    virtual void didConsumeBufferedAmount(unsigned long consumed) { }
+    virtual void didStartClosingHandshake() { }
+    virtual void didClose(ClosingHandshakeCompletionStatus, unsigned short code, const WebString& reason) { }
+
+    // FIXME: Deperecate these methods.
+    virtual void didConnect() { }
     virtual void didUpdateBufferedAmount(unsigned long bufferedAmount) { }
-    virtual void didStartClosingHandshake() { }
-    virtual void didClose(unsigned long bufferedAmount, ClosingHandshakeCompletionStatus, unsigned short code, const WebString& reason) { }
+    virtual void didClose(unsigned long unhandledBufferedAmount, ClosingHandshakeCompletionStatus, unsigned short code, const WebString& reason) { }
 };
 
 } // namespace blink
 
 #endif // WebSocketClient_h