Change FrameTree to return Frames instead of LocalFrames.

Source/core/loader/appcache/ApplicationCacheHost.cpp

 /*
  * 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 70 matching lines @@
     if (!isApplicationCacheEnabled())
         return;
 
     ASSERT(m_documentLoader->frame());
     LocalFrame& frame = *m_documentLoader->frame();
     m_host = frame.loader().client()->createApplicationCacheHost(this);
     if (m_host) {
         WrappedResourceRequest wrapped(request);
 
         const WebApplicationCacheHost* spawningHost = 0;
-        LocalFrame* spawningFrame = frame.tree().parent();
-        if (!spawningFrame)
+        Frame* spawningFrame = frame.tree().parent();
+        if (!spawningFrame || !spawningFrame->isLocalFrame())
             spawningFrame = frame.loader().opener();
-        if (!spawningFrame)
+        if (!spawningFrame || !spawningFrame->isLocalFrame())
             spawningFrame = &frame;
-        if (DocumentLoader* spawningDocLoader = spawningFrame->loader().documentLoader())
+        if (DocumentLoader* spawningDocLoader = toLocalFrame(spawningFrame)->loader().documentLoader())
             spawningHost = spawningDocLoader->applicationCacheHost() ? spawningDocLoader->applicationCacheHost()->m_host.get() : 0;
 
         m_host->willStartMainResourceRequest(wrapped, spawningHost);
     }
 
     // NOTE: The semantics of this method, and others in this interface, are subtly different
     // than the method names would suggest. For example, in this method never returns an appcached
     // response in the SubstituteData out argument, instead we return the appcached response thru
     // the usual resource loading pipeline.
 }
@@ skipping 164 matching lines @@
 {
     notifyApplicationCache(PROGRESS_EVENT, progressTotal, progressDone, blink::WebApplicationCacheHost::UnknownError, String(), 0, String());
 }
 
 void ApplicationCacheHost::notifyErrorEventListener(blink::WebApplicationCacheHost::ErrorReason reason, const blink::WebURL& url, int status, const blink::WebString& message)
 {
     notifyApplicationCache(ERROR_EVENT, 0, 0, reason, url.string(), status, message);
 }
 
 } // namespace WebCore