Set navigationStart correctly for all load types.

third_party/WebKit/Source/core/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 479 matching lines @@
     void open();
     DocumentParser* implicitOpen(ParserSynchronizationPolicy);
 
     // This is the DOM API document.close()
     void close(ExceptionState&);
     // This is used internally and does not handle exceptions.
     void close();
     // implicitClose() actually does the work of closing the input stream.
     void implicitClose();
 
-    bool dispatchBeforeUnloadEvent(ChromeClient&, bool isReload, bool& didAllowNavigation);
+    bool dispatchBeforeUnloadEvent(ChromeClient&, bool isReload, bool& didAllowNavigation, bool& eventListenerCalled);
     void dispatchUnloadEvents();
 
     enum PageDismissalType {
         NoDismissal,
         BeforeUnloadDismissal,
         PageHideDismissal,
         UnloadVisibilityChangeDismissal,
         UnloadDismissal
     };
     PageDismissalType pageDismissalEventBeingDispatched() const;
@@ skipping 947 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif // Document_h