[DevTools] Fix window object init on chrome://* pages

third_party/WebKit/Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ skipping 1524 matching lines @@
 {
     client()->runScriptsAtDocumentElementAvailable();
     // The frame might be detached at this point.
 }
 
 void FrameLoader::dispatchDidClearDocumentOfWindowObject()
 {
     if (!m_frame->script().canExecuteScripts(NotAboutToExecuteScript))
         return;
 
+    Settings* settings = m_frame->settings();
+    if (settings && settings->forceMainWorldInitialization())
+        m_frame->script().initializeMainWorld();
     InspectorInstrumentation::didClearDocumentOfWindowObject(m_frame);
 
     if (m_dispatchingDidClearWindowObjectInMainWorld)
         return;
     TemporaryChange<bool>
         inDidClearWindowObject(m_dispatchingDidClearWindowObjectInMainWorld, true);
     // We just cleared the document, not the entire window object, but for the
     // embedder that's close enough.
     client()->dispatchDidClearWindowObjectInMainWorld();
 }
@@ skipping 58 matching lines @@
     tracedValue->setString("documentLoaderURL", m_documentLoader ? m_documentLoader->url() : String());
     return tracedValue;
 }
 
 inline void FrameLoader::takeObjectSnapshot() const
 {
     TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID("loading", "FrameLoader", this, toTracedValue());
 }
 
 } // namespace blink