Add isPageVisible to Page

third_party/WebKit/Source/modules/vibration/NavigatorVibration.cpp

 /*
  *  Copyright (C) 2012 Samsung Electronics
  *
  *  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,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 127 matching lines @@
         m_isVibrating = false;
 
     if (m_pattern.size()) {
         m_timerStart.startOneShot(m_pattern[0] / 1000.0, BLINK_FROM_HERE);
         m_pattern.remove(0);
     }
 }
 
 void NavigatorVibration::pageVisibilityChanged()
 {
-    if (page()->visibilityState() != PageVisibilityStateVisible)
+    if (!page()->isPageVisible())
         cancelVibration();
 }
 
 void NavigatorVibration::didCommitLoad(LocalFrame* frame)
 {
     // A new load has been committed, which means the current page will be
     // unloaded. Cancel all running vibrations.
     cancelVibration();
 }
 
@@ skipping 10 matching lines @@
         return false;
 
     UseCounter::count(navigator.frame(), UseCounter::NavigatorVibrate);
     if (!navigator.frame()->isMainFrame())
         UseCounter::count(navigator.frame(), UseCounter::NavigatorVibrateSubFrame);
 
     Page* page = navigator.frame()->page();
     if (!page)
         return false;
 
-    if (page->visibilityState() != PageVisibilityStateVisible)
+    if (!page->isPageVisible())
         return false;
 
     return NavigatorVibration::from(*page).vibrate(pattern);
 }
 
 NavigatorVibration& NavigatorVibration::from(Page& page)
 {
     NavigatorVibration* navigatorVibration = static_cast<NavigatorVibration*>(WillBeHeapSupplement<Page>::from(page, supplementName()));
     if (!navigatorVibration) {
         navigatorVibration = new NavigatorVibration(page);
         WillBeHeapSupplement<Page>::provideTo(page, supplementName(), adoptPtrWillBeNoop(navigatorVibration));
     }
     return *navigatorVibration;
 }
 
 const char* NavigatorVibration::supplementName()
 {
     return "NavigatorVibration";
 }
 
 DEFINE_TRACE(NavigatorVibration)
 {
     WillBeHeapSupplement<Page>::trace(visitor);
     PageLifecycleObserver::trace(visitor);
 }
 
 } // namespace blink