Rudimentary keyboard navigation support for <video>/<audio>

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 283 matching lines @@
     bool ignoreTrackDisplayUpdateRequests() const { return m_ignoreTrackDisplayUpdate > 0; }
     void beginIgnoringTrackDisplayUpdateRequests();
     void endIgnoringTrackDisplayUpdateRequests();
 
 private:
     void createMediaPlayer();
 
     virtual bool alwaysCreateUserAgentShadowRoot() const OVERRIDE FINAL { return true; }
     virtual bool areAuthorShadowsAllowed() const OVERRIDE FINAL { return false; }
 
-    virtual bool hasCustomFocusLogic() const OVERRIDE FINAL;
     virtual bool supportsFocus() const OVERRIDE FINAL;
     virtual bool isMouseFocusable() const OVERRIDE FINAL;
     virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE;
     virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE FINAL;
     virtual void didNotifySubtreeInsertionsToDocument() OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE FINAL;
     virtual void didRecalcStyle(StyleRecalcChange) OVERRIDE FINAL;
 
     virtual void didBecomeFullscreenElement() OVERRIDE FINAL;
@@ skipping 238 matching lines @@
 inline bool isHTMLMediaElement(const HTMLElement& element)
 {
     return isHTMLAudioElement(element) || isHTMLVideoElement(element);
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLMediaElement);
 
 } //namespace
 
 #endif