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

Source/core/frame/LocalDOMWindow.cpp

Index: Source/core/frame/LocalDOMWindow.cpp
diff --git a/Source/core/frame/LocalDOMWindow.cpp b/Source/core/frame/LocalDOMWindow.cpp
index 49b4499e49c13c678d9234990b740ba32c13130e..13eda6968a6bdd0afa7ac6d7f2ac641969e0c142 100644
--- a/Source/core/frame/LocalDOMWindow.cpp
+++ b/Source/core/frame/LocalDOMWindow.cpp
@@ -645,8 +645,9 @@ void LocalDOMWindow::sendOrientationChangeEvent()
     dispatchEvent(Event::create(EventTypeNames::orientationchange));
 
     for (size_t i = 0; i < childFrames.size(); ++i) {
-        if (childFrames[i]->domWindow())
-            childFrames[i]->domWindow()->sendOrientationChangeEvent();
+        if (!childFrames[i]->isLocalFrame())
+            continue;
+        toLocalFrame(childFrames[i].get())->localDOMWindow()->sendOrientationChangeEvent();
     }
 }
 
@@ -1855,24 +1856,25 @@ PassRefPtrWillBeRawPtr<LocalDOMWindow> LocalDOMWindow::open(const String& urlStr
     }
     // FIXME: Navigating RemoteFrames is not yet supported.
     if (targetFrame && targetFrame->isLocalFrame()) {
-        if (!activeDocument->canNavigate(*targetFrame))
+        LocalFrame* localTargetFrame = toLocalFrame(targetFrame);
+        if (!activeDocument->canNavigate(*localTargetFrame))
             return nullptr;
 
         KURL completedURL = firstFrame->document()->completeURL(urlString);
 
-        if (targetFrame->domWindow()->isInsecureScriptAccess(*callingWindow, completedURL))
-            return targetFrame->domWindow();
+        if (localTargetFrame->localDOMWindow()->isInsecureScriptAccess(*callingWindow, completedURL))
+            return localTargetFrame->localDOMWindow();
 
         if (urlString.isEmpty())
-            return targetFrame->domWindow();
+            return localTargetFrame->localDOMWindow();
 
-        toLocalFrame(targetFrame)->navigationScheduler().scheduleLocationChange(activeDocument, completedURL, false);
-        return targetFrame->domWindow();
+        localTargetFrame->navigationScheduler().scheduleLocationChange(activeDocument, completedURL, false);
+        return localTargetFrame->localDOMWindow();
     }
 
     WindowFeatures windowFeatures(windowFeaturesString);
     LocalFrame* result = createWindow(urlString, frameName, windowFeatures, *callingWindow, *firstFrame, *frame());
-    return result ? result->domWindow() : 0;
+    return result ? result->localDOMWindow() : 0;
 }
 
 void LocalDOMWindow::showModalDialog(const String& urlString, const String& dialogFeaturesString,
@@ -1907,8 +1909,9 @@ LocalDOMWindow* LocalDOMWindow::anonymousIndexedGetter(uint32_t index)
         return 0;
 
     Frame* child = frame()->tree().scopedChild(index);
+    // FIXME: Temporary hack to stage the conversions.
     if (child)
-        return child->domWindow();
+        return static_cast<LocalDOMWindow*>(child->domWindow());
 
     return 0;
 }