UserGestureIndicator is a mess. Clean it up.

third_party/WebKit/Source/modules/notifications/Notification.cpp

 /*
  * Copyright (C) 2013 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 190 matching lines @@
 
   notificationManager()->closePersistent(WebSecurityOrigin(origin), m_data.tag,
                                          m_notificationId);
 }
 
 void Notification::dispatchShowEvent() {
   dispatchEvent(Event::create(EventTypeNames::show));
 }
 
 void Notification::dispatchClickEvent() {
-  UserGestureIndicator gestureIndicator(DefinitelyProcessingNewUserGesture);
+  UserGestureIndicator gestureIndicator(
+      UserGestureToken::create(UserGestureToken::NewGesture));
   ScopedWindowFocusAllowedIndicator windowFocusAllowed(getExecutionContext());
   dispatchEvent(Event::create(EventTypeNames::click));
 }
 
 void Notification::dispatchErrorEvent() {
   dispatchEvent(Event::create(EventTypeNames::error));
 }
 
 void Notification::dispatchCloseEvent() {
   // The notification should be Showing if the user initiated the close, or it
@@ skipping 174 matching lines @@
 }
 
 DEFINE_TRACE(Notification) {
   visitor->trace(m_prepareShowMethodRunner);
   visitor->trace(m_loader);
   EventTargetWithInlineData::trace(visitor);
   ActiveDOMObject::trace(visitor);
 }
 
 }  // namespace blink