Extract a DOMWindow interface from LocalDOMWindow and use it in the idl.

Source/core/frame/RemoteFrame.h

Index: Source/core/frame/RemoteFrame.h
diff --git a/Source/core/frame/RemoteFrame.h b/Source/core/frame/RemoteFrame.h
index 3818f6365f646c94543612395d84bfc2fd328312..1f8ec6dd88bdcb89ae63dd9da940341a6f95e748 100644
--- a/Source/core/frame/RemoteFrame.h
+++ b/Source/core/frame/RemoteFrame.h
@@ -22,7 +22,7 @@ public:
     // Frame overrides:
     void trace(Visitor*) override;
     virtual bool isRemoteFrame() const override { return true; }
-    virtual LocalDOMWindow* domWindow() const override { return 0; }
+    virtual DOMWindow* domWindow() const override { return 0; }

[haraken, 2014/11/08 09:17:25]

I'm confused with this. Why does RemoteDOMWindow return 0 for domWindow()? Given
that RemoteDOMWindow is DOMWindow, I think it should return a DOMWindow object.

[dcheng, 2014/11/08 23:59:56]

This isn't implemented yet, but will be in a future patch.

     virtual void navigate(Document& originDocument, const KURL&, bool lockBackForwardList) override;
     virtual void detach() override;