Revert of Move throttling of background timers into the renderer scheduler

third_party/WebKit/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,
@@ skipping 167 matching lines @@
     void setVisibilityState(PageVisibilityState, bool);
 
     bool isCursorVisible() const;
     void setIsCursorVisible(bool isVisible) { m_isCursorVisible = isVisible; }
 
 #if ENABLE(ASSERT)
     void setIsPainting(bool painting) { m_isPainting = painting; }
     bool isPainting() const { return m_isPainting; }
 #endif
 
+    double timerAlignmentInterval() const;
+
     class CORE_EXPORT MultisamplingChangedObserver : public WillBeGarbageCollectedMixin {
     public:
         virtual void multisamplingChanged(bool) = 0;
     };
 
     void addMultisamplingChangedObserver(MultisamplingChangedObserver*);
     void removeMultisamplingChangedObserver(MultisamplingChangedObserver*);
 
     void didCommitLoad(LocalFrame*);
 
     void acceptLanguagesChanged();
 
     static void networkStateChanged(bool online);
 
     MemoryPurgeController& memoryPurgeController();
 
     void purgeMemory(MemoryPurgeMode, DeviceKind) override;
 
     DECLARE_TRACE();
 
     void willCloseLayerTreeView();
     void willBeDestroyed();
 
 private:
     void initGroup();
 
+    void setTimerAlignmentInterval(double);
+
     void setNeedsLayoutInAllFrames();
 
     // SettingsDelegate overrides.
     void settingsChanged(SettingsDelegate::ChangeType) override;
 
     RefPtrWillBeMember<PageAnimator> m_animator;
     const OwnPtrWillBeMember<AutoscrollController> m_autoscrollController;
     RawPtrWillBeMember<ChromeClient> m_chromeClient;
     const OwnPtrWillBeMember<DragCaretController> m_dragCaretController;
     const OwnPtrWillBeMember<DragController> m_dragController;
@@ skipping 26 matching lines @@
     UseCounter m_useCounter;
     OriginsUsingFeatures m_originsUsingFeatures;
 
     bool m_openedByDOM;
 
     bool m_tabKeyCyclesThroughElements;
     bool m_defersLoading;
 
     float m_deviceScaleFactor;
 
+    double m_timerAlignmentInterval;
+
     PageVisibilityState m_visibilityState;
 
     bool m_isCursorVisible;
 
 #if ENABLE(ASSERT)
     bool m_isPainting;
 #endif
 
     WillBeHeapHashSet<RawPtrWillBeWeakMember<MultisamplingChangedObserver>> m_multisamplingChangedObservers;
 
     // A pointer to all the interfaces provided to in-process Frames for this Page.
     // FIXME: Most of the members of Page should move onto FrameHost.
     OwnPtrWillBeMember<FrameHost> m_frameHost;
 
     OwnPtrWillBeMember<MemoryPurgeController> m_memoryPurgeController;
 };
 
 extern template class CORE_EXTERN_TEMPLATE_EXPORT WillBeHeapSupplement<Page>;
 
 } // namespace blink
 
 #endif // Page_h