Block javascript: document navigations during page dismissal events.

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 293 matching lines @@
 
     if (m_stateMachine.isDisplayingInitialEmptyDocument())
         m_stateMachine.advanceTo(FrameLoaderStateMachine::CommittedFirstRealLoad);
 }
 
 // This is only called by ScriptController::executeScriptIfJavaScriptURL
 // and always contains the result of evaluating a javascript: url.
 // This is the <iframe src="javascript:'html'"> case.
 void FrameLoader::replaceDocumentWhileExecutingJavaScriptURL(const String& source, Document* ownerDocument)
 {
-    if (!m_frame->document()->loader())
+    if (!m_frame->document()->loader() || m_frame->document()->pageDismissalEventBeingDispatched() != Document::NoDismissal)
         return;
 
     // DocumentLoader::replaceDocumentWhileExecutingJavaScriptURL can cause the DocumentLoader to get deref'ed and possible destroyed,
     // so protect it with a RefPtr.
     RefPtrWillBeRawPtr<DocumentLoader> documentLoader(m_frame->document()->loader());
 
     UseCounter::count(*m_frame->document(), UseCounter::ReplaceDocumentViaJavaScriptURL);
 
     // Prepare a DocumentInit before clearing the frame, because it may need to
     // inherit an aliased security context.
@@ skipping 1225 matching lines @@
     // FIXME: We need a way to propagate insecure requests policy flags to
     // out-of-process frames. For now, we'll always use default behavior.
     if (!parentFrame->isLocalFrame())
         return nullptr;
 
     ASSERT(toLocalFrame(parentFrame)->document());
     return toLocalFrame(parentFrame)->document()->insecureNavigationsToUpgrade();
 }
 
 } // namespace blink