Revert of Remove prefixed Pointer Lock API.

Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003-2011, 2013, 2014 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
@@ skipping 463 matching lines @@
     // W3C version
     void webkitRequestFullscreen();
 
     bool containsFullScreenElement() const { return hasElementFlag(ContainsFullScreenElement); }
     void setContainsFullScreenElement(bool);
     void setContainsFullScreenElementOnAncestorsCrossingFrameBoundaries(bool);
 
     bool isInTopLayer() const { return hasElementFlag(IsInTopLayer); }
     void setIsInTopLayer(bool);
 
+    void webkitRequestPointerLock();
     void requestPointerLock();
 
     bool isSpellCheckingEnabled() const;
 
     // FIXME: public for RenderTreeBuilder, we shouldn't expose this though.
     PassRefPtr<RenderStyle> styleForRenderer();
 
     bool hasID() const;
     bool hasClass() const;
     const SpaceSplitString& classNames() const;
@@ skipping 369 matching lines @@
     static PassRefPtrWillBeRawPtr<T> create(const QualifiedName&, Document&)
 #define DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(T) \
     PassRefPtrWillBeRawPtr<T> T::create(const QualifiedName& tagName, Document& document) \
     { \
         return adoptRefWillBeNoop(new T(tagName, document)); \
     }
 
 } // namespace
 
 #endif