Framework for converting embedder uses of WebFrame to WebLocalFrame.

public/web/WebFrame.h

 /*
  * 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 67 matching lines @@
 struct WebFloatRect;
 struct WebPoint;
 struct WebPrintParams;
 struct WebRect;
 struct WebScriptSource;
 struct WebSize;
 struct WebURLLoaderOptions;
 
 template <typename T> class WebVector;
 
+typedef class WebFrame WebLocalFrame;
+
 class WebFrame {
 public:
     // Control of renderTreeAsText output
     enum RenderAsTextControl {
         RenderAsTextNormal = 0,
         RenderAsTextDebug = 1 << 0,
         RenderAsTextPrinting = 1 << 1
     };
     typedef unsigned RenderAsTextControls;
 
     // Creates a WebFrame. Delete this WebFrame by calling WebFrame::close().
     // It is valid to pass a null client pointer.
-    BLINK_EXPORT static WebFrame* create(WebFrameClient*);
+    BLINK_EXPORT static WebLocalFrame* create(WebFrameClient*);
 
     // Returns the number of live WebFrame objects, used for leak checking.
     BLINK_EXPORT static int instanceCount();
 
     // Returns the WebFrame associated with the current V8 context. This
     // function can return 0 if the context is associated with a Document that
     // is not currently being displayed in a Frame.
-    BLINK_EXPORT static WebFrame* frameForCurrentContext();
+    BLINK_EXPORT static WebLocalFrame* frameForCurrentContext();
 
     // Returns the frame corresponding to the given context. This can return 0
     // if the context is detached from the frame, or if the context doesn't
     // correspond to a frame (e.g., workers).
-    BLINK_EXPORT static WebFrame* frameForContext(v8::Handle<v8::Context>);
+    BLINK_EXPORT static WebLocalFrame* frameForContext(v8::Handle<v8::Context>);
 
     // Returns the frame inside a given frame or iframe element. Returns 0 if
     // the given element is not a frame, iframe or if the frame is empty.
-    BLINK_EXPORT static WebFrame* fromFrameOwnerElement(const WebElement&);
+    BLINK_EXPORT static WebLocalFrame* fromFrameOwnerElement(const WebElement&);
+
+    virtual WebLocalFrame* toWebLocalFrame() = 0;
 
     // This method closes and deletes the WebFrame.
     virtual void close() = 0;
 
 
     // Basic properties ---------------------------------------------------
 
     // The unique name of this frame.
     virtual WebString uniqueName() const = 0;
 
@@ skipping 530 matching lines @@
     // text form. This is used only by layout tests.
     virtual WebString layerTreeAsText(bool showDebugInfo = false) const = 0;
 
 protected:
     ~WebFrame() { }
 };
 
 } // namespace blink
 
 #endif