Expose the timestamp associated with a user gesture, and make it possible to recreate a new user ge…

public/web/WebScopedUserGesture.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 39 matching lines @@
 // user gesture. Doing so might enable malicious code to work around certain
 // restrictions such as opening multiple windows.
 // Instead, obtain the current WebUserGestureToken from the
 // WebUserGestureIndicator, and use this token to create a
 // WebScopedUserGesture. If the token was alrady consumed, the new
 // WebScopedUserGesture will not indicate that we are in the context of a user
 // gesture.
 class WebScopedUserGesture {
 public:
     explicit WebScopedUserGesture(const WebUserGestureToken& token) { initializeWithToken(token); }
+    explicit WebScopedUserGesture(double timestamp) { initializeWithTimestamp(timestamp); }
     WebScopedUserGesture() { initialize(); }
     ~WebScopedUserGesture() { reset(); }
 
 private:
     BLINK_EXPORT void initialize();
     BLINK_EXPORT void initializeWithToken(const WebUserGestureToken&);
+    BLINK_EXPORT void initializeWithTimestamp(double timestamp);
     BLINK_EXPORT void reset();
 
     WebPrivateOwnPtr<WebCore::UserGestureIndicator> m_indicator;
 };
 
 } // namespace blink
 
 #endif // WebScopedUserGesture_h