Revert of Move throttling of background timers into the renderer scheduler

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

Index: third_party/WebKit/Source/core/page/Page.h
diff --git a/third_party/WebKit/Source/core/page/Page.h b/third_party/WebKit/Source/core/page/Page.h
index 1ce3024aae3854c3c3b26056b845e6831d513f94..15cfbc5d8bf6def7abcf5bd81146bf311e9cfa29 100644
--- a/third_party/WebKit/Source/core/page/Page.h
+++ b/third_party/WebKit/Source/core/page/Page.h
@@ -185,6 +185,8 @@
     bool isPainting() const { return m_isPainting; }
 #endif
 
+    double timerAlignmentInterval() const;
+
     class CORE_EXPORT MultisamplingChangedObserver : public WillBeGarbageCollectedMixin {
     public:
         virtual void multisamplingChanged(bool) = 0;
@@ -210,6 +212,8 @@
 
 private:
     void initGroup();
+
+    void setTimerAlignmentInterval(double);
 
     void setNeedsLayoutInAllFrames();
 
@@ -257,6 +261,8 @@
 
     float m_deviceScaleFactor;
 
+    double m_timerAlignmentInterval;
+
     PageVisibilityState m_visibilityState;
 
     bool m_isCursorVisible;