Create Document exitPointerLock and pointerLockElement API methods.

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 5046 matching lines @@
 
 HTMLDialogElement* Document::activeModalDialog() const
 {
     if (m_topLayerElements.isEmpty())
         return 0;
     return toHTMLDialogElement(m_topLayerElements.last().get());
 }
 
 void Document::webkitExitPointerLock()
 {
+    exitPointerLock();
+}
+
+void Document::exitPointerLock()
+{
     if (!page())
         return;
     if (Element* target = page()->pointerLockController().element()) {
         if (target->document() != this)
             return;
     }
     page()->pointerLockController().requestPointerUnlock();
 }
 
 Element* Document::webkitPointerLockElement() const
 {
+    return pointerLockElement();
+}
+
+Element* Document::pointerLockElement() const
+{
     if (!page() || page()->pointerLockController().lockPending())
         return 0;
     if (Element* element = page()->pointerLockController().element()) {
         if (element->document() == this)
             return element;
     }
     return 0;
 }
 
 void Document::decrementLoadEventDelayCount()
@@ skipping 627 matching lines @@
     visitor->trace(m_visibilityObservers);
     visitor->trace(m_userActionElements);
     visitor->registerWeakMembers<Document, &Document::clearWeakMembers>(this);
     DocumentSupplementable::trace(visitor);
     TreeScope::trace(visitor);
     ContainerNode::trace(visitor);
     ExecutionContext::trace(visitor);
 }
 
 } // namespace WebCore