DOMWebSocket::bufferedAmount() should not return an "unsigned long"

Source/modules/websockets/DOMWebSocket.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 71 matching lines @@
     // without, we have these three signatures. Use of
     // Optional=DefaultIsUndefined in the IDL file doesn't help for now since
     // it's bound to a value of 0 which is indistinguishable from the case 0
     // is passed as code parameter.
     void close(unsigned short code, const String& reason, ExceptionState&);
     void close(ExceptionState&);
     void close(unsigned short code, ExceptionState&);
 
     const KURL& url() const;
     State readyState() const;
-    unsigned long bufferedAmount() const;
+    unsigned bufferedAmount() const;
 
     String protocol() const;
     String extensions() const;
 
     String binaryType() const;
     void setBinaryType(const String&);
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(open);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(message);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
@@ skipping 91 matching lines @@
 
     // Handle the JavaScript close method call. close() methods on this class
     // are just for determining if the optional code argument is supplied or
     // not.
     void closeInternal(int, const String&, ExceptionState&);
 
     size_t getFramingOverhead(size_t payloadSize);
 
     // Updates m_bufferedAmountAfterClose given the amount of data passed to
     // send() method after the state changed to CLOSING or CLOSED.
-    void updateBufferedAmountAfterClose(unsigned long);
+    void updateBufferedAmountAfterClose(unsigned);
     void reflectBufferedAmountConsumption(Timer<DOMWebSocket>*);
 
     void releaseChannel();
 
     enum BinaryType {
         BinaryTypeBlob,
         BinaryTypeArrayBuffer
     };
 
     Member<WebSocketChannel> m_channel;
 
     State m_state;
     KURL m_url;
-    unsigned long m_bufferedAmount;
+    unsigned m_bufferedAmount;
     // The consumed buffered amount that will be reflected to m_bufferedAmount
     // later. It will be cleared once reflected.
-    unsigned long m_consumedBufferedAmount;
-    unsigned long m_bufferedAmountAfterClose;
+    unsigned m_consumedBufferedAmount;
+    unsigned m_bufferedAmountAfterClose;
     BinaryType m_binaryType;
     // The subprotocol the server selected.
     String m_subprotocol;
     String m_extensions;
 
     Member<EventQueue> m_eventQueue;
     Timer<DOMWebSocket> m_bufferedAmountConsumeTimer;
 };
 
 } // namespace blink
 
 #endif // DOMWebSocket_h