Framework for converting embedder uses of WebFrame to WebLocalFrame.

Source/web/WebFrameImpl.cpp

Index: Source/web/WebFrameImpl.cpp
diff --git a/Source/web/WebFrameImpl.cpp b/Source/web/WebFrameImpl.cpp
index b99dd1b081b403a0dff21e593ec1b49d5fc70852..4fc38f19600ea2535cdb3a57cc34c404476d5486 100644
--- a/Source/web/WebFrameImpl.cpp
+++ b/Source/web/WebFrameImpl.cpp
@@ -489,7 +489,7 @@ int WebFrame::instanceCount()
     return frameCount;
 }
 
-WebFrame* WebFrame::frameForCurrentContext()
+WebLocalFrame* WebFrame::frameForCurrentContext()
 {
     v8::Handle<v8::Context> context = v8::Isolate::GetCurrent()->GetCurrentContext();
     if (context.IsEmpty())
@@ -497,12 +497,12 @@ WebFrame* WebFrame::frameForCurrentContext()
     return frameForContext(context);
 }
 
-WebFrame* WebFrame::frameForContext(v8::Handle<v8::Context> context)
+WebLocalFrame* WebFrame::frameForContext(v8::Handle<v8::Context> context)
 {
    return WebFrameImpl::fromFrame(toFrameIfNotDetached(context));
 }
 
-WebFrame* WebFrame::fromFrameOwnerElement(const WebElement& element)
+WebLocalFrame* WebFrame::fromFrameOwnerElement(const WebElement& element)
 {
     return WebFrameImpl::fromFrameOwnerElement(PassRefPtr<Element>(element).get());
 }