Rename PageLifecycleObserver to PageVisibilityObserver

third_party/WebKit/Source/modules/vibration/VibrationController.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 56 matching lines @@
     if (pattern.isUnsignedLong())
         sanitized.append(pattern.getAsUnsignedLong());
     else if (pattern.isUnsignedLongSequence())
         sanitized = pattern.getAsUnsignedLongSequence();
 
     return sanitizeVibrationPatternInternal(sanitized);
 }
 
 VibrationController::VibrationController(Document& document)
     : ContextLifecycleObserver(&document)
-    , PageLifecycleObserver(document.page())
+    , PageVisibilityObserver(document.page())
     , m_timerDoVibrate(this, &VibrationController::doVibrate)
     , m_isRunning(false)
     , m_isCallingCancel(false)
     , m_isCallingVibrate(false)
 {
     document.frame()->serviceRegistry()->connectToRemoteService(mojo::GetProxy(&m_service));
 }
 
 VibrationController::~VibrationController()
 {
@@ skipping 93 matching lines @@
     cancel();
 
     // If the document context was destroyed, never call the mojo service again.
     m_service.reset();
 
     // The context is not automatically cleared, so do it manually.
     ContextLifecycleObserver::clearContext();
 
     // Page outlives ExecutionContext so stop observing it to avoid having
     // |pageVisibilityChanged| or |contextDestroyed| called again.
-    PageLifecycleObserver::clearContext();
+    PageVisibilityObserver::clearContext();
 }
 
 void VibrationController::pageVisibilityChanged()
 {
     if (!page()->isPageVisible())
         cancel();
 }
 
 DEFINE_TRACE(VibrationController)
 {
     ContextLifecycleObserver::trace(visitor);
-    PageLifecycleObserver::trace(visitor);
+    PageVisibilityObserver::trace(visitor);
 }
 
 } // namespace blink