Conversion of more places in Blink to use WebLocalFrame

Source/web/WebDocument.cpp

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 84 matching lines @@
 WebString WebDocument::referrer() const
 {
     return constUnwrap<Document>()->referrer();
 }
 
 WebURL WebDocument::openSearchDescriptionURL() const
 {
     return const_cast<Document*>(constUnwrap<Document>())->openSearchDescriptionURL();
 }
 
-WebFrame* WebDocument::frame() const
+WebLocalFrame* WebDocument::frame() const
 {
     return WebFrameImpl::fromFrame(constUnwrap<Document>()->frame());
 }
 
 bool WebDocument::isHTMLDocument() const
 {
     return constUnwrap<Document>()->isHTMLDocument();
 }
 
 bool WebDocument::isXHTMLDocument() const
@@ skipping 194 matching lines @@
     m_private = elem;
     return *this;
 }
 
 WebDocument::operator PassRefPtr<Document>() const
 {
     return toDocument(m_private.get());
 }
 
 } // namespace blink