Spatial navigation enhancements

Source/core/dom/KeyboardEvent.h

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 105 matching lines @@
 KeyboardEvent* findKeyboardEvent(Event*);
 
 class KeyboardEventDispatchMediator : public EventDispatchMediator {
 public:
     static PassRefPtr<KeyboardEventDispatchMediator> create(PassRefPtr<KeyboardEvent>);
 private:
     explicit KeyboardEventDispatchMediator(PassRefPtr<KeyboardEvent>);
     virtual bool dispatchEvent(EventDispatcher*) const OVERRIDE;
 };
 
+inline KeyboardEvent* toKeyboardEvent(Event* event)
+{
+    ASSERT_WITH_SECURITY_IMPLICATION(event && event->isKeyboardEvent());

[tkent, 2013/06/16 22:50:24]

We usually allow NULL argument for toFoo functions.

+    return static_cast<KeyboardEvent*>(event);
+}
+
 } // namespace WebCore
 
 #endif // KeyboardEvent_h