Extract simpler classes for observing context lifecycle and observe Page lifecycle inNavigatorVibra…

Source/core/page/Page.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef Page_h
 #define Page_h
 
+#include "core/dom/LifecycleContext.h"
 #include "core/dom/ViewportArguments.h"
 #include "core/page/LayoutMilestones.h"
 #include "core/page/PageVisibilityState.h"
 #include "core/page/UseCounter.h"
 #include "core/platform/Supplementable.h"
 #include "core/platform/graphics/LayoutRect.h"
 #include "core/platform/graphics/Region.h"
 #include "core/rendering/Pagination.h"
 #include "wtf/Forward.h"
 #include "wtf/HashSet.h"
@@ skipping 22 matching lines @@
 class FocusController;
 class Frame;
 class FrameSelection;
 class HaltablePlugin;
 class HistoryItem;
 class InspectorClient;
 class InspectorController;
 class Node;
 class PageConsole;
 class PageGroup;
+class PageLifecycleNotifier;
 class PlatformMouseEvent;
 class PluginData;
 class PointerLockController;
 class ProgressTracker;
 class Range;
 class RenderBox;
 class RenderObject;
 class RenderTheme;
 class VisibleSelection;
 class ScrollableArea;
 class ScrollingCoordinator;
 class Settings;
 class StorageNamespace;
 class ValidationMessageClient;
 
 typedef uint64_t LinkHash;
 
 float deviceScaleFactor(Frame*);
 
 struct ArenaSize {
     ArenaSize(size_t treeSize, size_t allocated)
         : treeSize(treeSize)
         , allocated(allocated)
     {
     }
     size_t treeSize;
     size_t allocated;
 };
 
-class Page : public Supplementable<Page> {
+class Page : public Supplementable<Page>, public LifecycleContext {
     WTF_MAKE_NONCOPYABLE(Page);
     friend class Settings;
 public:
     static void scheduleForcedStyleRecalcForAllPages();
 
     // It is up to the platform to ensure that non-null clients are provided where required.
     struct PageClients {
         WTF_MAKE_NONCOPYABLE(PageClients); WTF_MAKE_FAST_ALLOCATED;
     public:
         PageClients();
@@ skipping 155 matching lines @@
 
     class MultisamplingChangedObserver {
     public:
         virtual void multisamplingChanged(bool) = 0;
     };
 
     void addMultisamplingChangedObserver(MultisamplingChangedObserver*);
     void removeMultisamplingChangedObserver(MultisamplingChangedObserver*);
     void multisamplingChanged();
 
+protected:
+    PageLifecycleNotifier* lifecycleNotifier();
+
 private:
     void initGroup();
 
 #if ASSERT_DISABLED
     void checkSubframeCountConsistency() const { }
 #else
     void checkSubframeCountConsistency() const;
 #endif
 
     void setTimerAlignmentInterval(double);
 
+    virtual PassOwnPtr<LifecycleNotifier> createLifecycleNotifier() OVERRIDE;
+
     OwnPtr<AutoscrollController> m_autoscrollController;
     OwnPtr<Chrome> m_chrome;
     OwnPtr<DragCaretController> m_dragCaretController;
 
     OwnPtr<DragController> m_dragController;
     OwnPtr<FocusController> m_focusController;
     OwnPtr<ContextMenuController> m_contextMenuController;
     OwnPtr<InspectorController> m_inspectorController;
     OwnPtr<PointerLockController> m_pointerLockController;
     RefPtr<ScrollingCoordinator> m_scrollingCoordinator;
@@ skipping 53 matching lines @@
 #endif
 
     const OwnPtr<PageConsole> m_console;
 
     HashSet<MultisamplingChangedObserver*> m_multisamplingChangedObservers;
 };
 
 } // namespace WebCore
     
 #endif // Page_h