Add Blink APIs for frame tree mirroring.

Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 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 127 matching lines @@
 #include "web/StorageQuotaClientImpl.h"
 #include "web/ValidationMessageClientImpl.h"
 #include "web/ViewportAnchor.h"
 #include "web/WebDevToolsAgentImpl.h"
 #include "web/WebDevToolsAgentPrivate.h"
 #include "web/WebInputEventConversion.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/WebPagePopupImpl.h"
 #include "web/WebPluginContainerImpl.h"
 #include "web/WebPopupMenuImpl.h"
+#include "web/WebRemoteFrameImpl.h"
 #include "web/WebSettingsImpl.h"
 #include "web/WorkerGlobalScopeProxyProviderImpl.h"
 #include "web/painting/ContinuousPainter.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/RefPtr.h"
 #include "wtf/TemporaryChange.h"
 
 #if USE(DEFAULT_RENDER_THEME)
 #include "core/rendering/RenderThemeChromiumDefault.h"
 #endif
@@ skipping 149 matching lines @@
 void WebView::didExitModalLoop()
 {
     ASSERT(pageLoadDeferrerStack().size());
 
     delete pageLoadDeferrerStack().last();
     pageLoadDeferrerStack().removeLast();
 }
 
 void WebViewImpl::setMainFrame(WebFrame* frame)
 {
-    toWebLocalFrameImpl(frame)->initializeAsMainFrame(page());
+    if (frame->isWebLocalFrame())
+        toWebLocalFrameImpl(frame)->initializeAsMainFrame(page());
+    else
+        toWebRemoteFrameImpl(frame)->initializeAsMainFrame(page());
 }
 
 void WebViewImpl::setAutofillClient(WebAutofillClient* autofillClient)
 {
     m_autofillClient = autofillClient;
 }
 
 void WebViewImpl::setDevToolsAgentClient(WebDevToolsAgentClient* devToolsClient)
 {
     if (devToolsClient)
@@ skipping 3776 matching lines @@
     const PageScaleConstraints& constraints = m_pageScaleConstraintsSet.pageDefinedConstraints();
 
     if (!mainFrameImpl() || !mainFrameImpl()->frameView())
         return false;
 
     return mainFrameImpl()->frameView()->layoutSize().width() == m_size.width
         || (constraints.minimumScale == constraints.maximumScale && constraints.minimumScale != -1);
 }
 
 } // namespace blink