Use "int" instead of "long" for bindings where the WebIDL uses "long".

Source/modules/mediastream/RTCDataChannel.h

 /*
  * Copyright (C) 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:
  * 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, this list of conditions and the following disclaimer in the
@@ skipping 42 matching lines @@
     // DEPRECATED
     bool reliable() const;
 
     bool ordered() const;
     unsigned short maxRetransmitTime() const;
     unsigned short maxRetransmits() const;
     String protocol() const;
     bool negotiated() const;
     unsigned short id() const;
     String readyState() const;
-    unsigned long bufferedAmount() const;
+    unsigned bufferedAmount() const;
 
     String binaryType() const;
     void setBinaryType(const String&, ExceptionState&);
 
     void send(const String&, ExceptionState&);
     void send(PassRefPtr<ArrayBuffer>, ExceptionState&);
     void send(PassRefPtr<ArrayBufferView>, ExceptionState&);
     void send(PassRefPtr<Blob>, ExceptionState&);
 
     void close();
@@ skipping 43 matching lines @@
     };
     BinaryType m_binaryType;
 
     Timer<RTCDataChannel> m_scheduledEventTimer;
     Vector<RefPtr<Event> > m_scheduledEvents;
 };
 
 } // namespace WebCore
 
 #endif // RTCDataChannel_h