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

Source/bindings/core/v8/V8Initializer.cpp

Index: Source/bindings/core/v8/V8Initializer.cpp
diff --git a/Source/bindings/core/v8/V8Initializer.cpp b/Source/bindings/core/v8/V8Initializer.cpp
index c015f4369ba6bc07caa1c6e6c5cabf3bde7b8558..c80be1ec04169c49f9e2ebb469d7d218be7be762 100644
--- a/Source/bindings/core/v8/V8Initializer.cpp
+++ b/Source/bindings/core/v8/V8Initializer.cpp
@@ -69,7 +69,10 @@ static LocalFrame* findFrame(v8::Local<v8::Object> host, v8::Local<v8::Value> da
         v8::Handle<v8::Object> windowWrapper = V8Window::findInstanceInPrototypeChain(host, isolate);
         if (windowWrapper.IsEmpty())
             return 0;
-        return V8Window::toImpl(windowWrapper)->frame();
+        DOMWindow* window = V8Window::toImpl(windowWrapper);
+        if (!window->isLocalDOMWindow())
+            return 0;
+        return toLocalDOMWindow(window)->frame();
     }
 
     if (V8History::wrapperTypeInfo.equals(type))
@@ -301,7 +304,7 @@ static void failedAccessCheckCallbackInMainThread(v8::Local<v8::Object> host, v8
     LocalFrame* target = findFrame(host, data, isolate);
     if (!target)
         return;
-    LocalDOMWindow* targetWindow = target->domWindow();
+    LocalDOMWindow* targetWindow = target->localDOMWindow();
 
     // FIXME: We should modify V8 to pass in more contextual information (context, property, and object).
     ExceptionState exceptionState(ExceptionState::UnknownContext, 0, 0, isolate->GetCurrentContext()->Global(), isolate);