Remove unused url argument to HTMLMediaElement::canPlayType

Source/core/html/HTMLMediaElement.h

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple 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 96 matching lines @@
     const KURL& currentSrc() const { return m_currentSrc; }
 
     enum NetworkState { NETWORK_EMPTY, NETWORK_IDLE, NETWORK_LOADING, NETWORK_NO_SOURCE };
     NetworkState networkState() const;
 
     String preload() const;
     void setPreload(const AtomicString&);
 
     virtual PassRefPtr<TimeRanges> buffered() const OVERRIDE FINAL;
     void load();
-    String canPlayType(const String& mimeType, const String& keySystem = String(), const KURL& = KURL()) const;
+    String canPlayType(const String& mimeType, const String& keySystem = String()) const;
 
     // ready state
     virtual ReadyState readyState() const OVERRIDE FINAL;
     bool seeking() const;
 
     // playback state
     virtual double currentTime() const OVERRIDE FINAL;
     virtual void setCurrentTime(double, ExceptionState&) OVERRIDE FINAL;
     virtual double duration() const OVERRIDE FINAL;
     virtual bool paused() const OVERRIDE FINAL;
@@ skipping 459 matching lines @@
 inline bool isHTMLMediaElement(const Node& node)
 {
     return node.isElementNode() && toElement(node).isMediaElement();
 }
 
 DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION(HTMLMediaElement);
 
 } //namespace
 
 #endif