Add support for setting password value gated on user's gesture in a page

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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 206 matching lines @@
 
     void didCommitLoad(LocalFrame*);
 
     static void networkStateChanged(bool online);
     PassOwnPtr<LifecycleNotifier<Page> > createLifecycleNotifier();
 
     void trace(Visitor*);
 
     void willBeDestroyed();
 
+    // Note: m_userGestureSeenSinceLastNavigation is set to false on every page navigation.
+    void setUserGestureSeen() { m_userGestureSeenSinceLastNavigation = true; }
+    bool userGestureSeenSinceLastNavigation() const { return m_userGestureSeenSinceLastNavigation; }
+
 protected:
     PageLifecycleNotifier& lifecycleNotifier();
 
 private:
     void initGroup();
 
 #if ASSERT_DISABLED
     void checkSubframeCountConsistency() const { }
 #else
     void checkSubframeCountConsistency() const;
@@ skipping 46 matching lines @@
     double m_timerAlignmentInterval;
 
     PageVisibilityState m_visibilityState;
 
     bool m_isCursorVisible;
 
 #ifndef NDEBUG
     bool m_isPainting;
 #endif
 
+    bool m_userGestureSeenSinceLastNavigation;
+
     HashSet<MultisamplingChangedObserver*> m_multisamplingChangedObservers;
 
     // A pointer to all the interfaces provided to in-process Frames for this Page.
     // FIXME: Most of the members of Page should move onto FrameHost.
     OwnPtr<FrameHost> m_frameHost;
 };
 
 } // namespace WebCore
 
 #endif // Page_h