Revert of Move navigation-induced hiding of form-validation-bubble to the browser process.

third_party/WebKit/Source/core/page/Page.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 134 matching lines @@
   Frame* MainFrame() const { return main_frame_; }
   // Escape hatch for existing code that assumes that the root frame is
   // always a LocalFrame. With OOPI, this is not always the case. Code that
   // depends on this will generally have to be rewritten to propagate any
   // necessary state through all renderer processes for that page and/or
   // coordinate/rely on the browser process to help dispatch/coordinate work.
   LocalFrame* DeprecatedLocalMainFrame() const {
     return ToLocalFrame(main_frame_);
   }
 
+  void WillUnloadDocument(const Document&);
   void DocumentDetached(Document*);
 
   bool OpenedByDOM() const;
   void SetOpenedByDOM();
 
   PageAnimator& Animator() { return *animator_; }
   ChromeClient& GetChromeClient() const { return *chrome_client_; }
   AutoscrollController& GetAutoscrollController() const {
     return *autoscroll_controller_;
   }
@@ skipping 203 matching lines @@
 #endif
 
   int subframe_count_;
 };
 
 extern template class CORE_EXTERN_TEMPLATE_EXPORT Supplement<Page>;
 
 }  // namespace blink
 
 #endif  // Page_h