Rename PageLifecycleObserver to PageVisibilityObserver

third_party/WebKit/Source/core/page/Page.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 472 matching lines @@
     visitor->trace(m_dragCaretController);
     visitor->trace(m_dragController);
     visitor->trace(m_focusController);
     visitor->trace(m_contextMenuController);
     visitor->trace(m_pointerLockController);
     visitor->trace(m_scrollingCoordinator);
     visitor->trace(m_mainFrame);
     visitor->trace(m_validationMessageClient);
     visitor->trace(m_frameHost);
     Supplementable<Page>::trace(visitor);
-    PageLifecycleNotifier::trace(visitor);
+    PageVisibilityNotifier::trace(visitor);
 }
 
 void Page::layerTreeViewInitialized(WebLayerTreeView& layerTreeView)
 {
     if (scrollingCoordinator())
         scrollingCoordinator()->layerTreeViewInitialized(layerTreeView);
 }
 
 void Page::willCloseLayerTreeView(WebLayerTreeView& layerTreeView)
 {
@@ skipping 17 matching lines @@
     ordinaryPages().remove(this);
 
     if (m_scrollingCoordinator)
         m_scrollingCoordinator->willBeDestroyed();
 
     chromeClient().chromeDestroyed();
     if (m_validationMessageClient)
         m_validationMessageClient->willBeDestroyed();
     m_mainFrame = nullptr;
 
-    PageLifecycleNotifier::notifyContextDestroyed();
+    PageVisibilityNotifier::notifyContextDestroyed();
 }
 
 void Page::compressStrings(Timer<Page>* timer)
 {
     ASSERT_UNUSED(timer, timer == &m_timerForCompressStrings);
     if (m_visibilityState == PageVisibilityStateHidden)
         CompressibleStringImpl::compressAll();
 }
 
 Page::PageClients::PageClients()
     : chromeClient(nullptr)
     , contextMenuClient(nullptr)
     , editorClient(nullptr)
     , spellCheckerClient(nullptr)
 {
 }
 
 Page::PageClients::~PageClients()
 {
 }
 
 template class CORE_TEMPLATE_EXPORT Supplement<Page>;
 
 } // namespace blink