Make the timer in SMILTimeContainer more of an implementation detail

Source/core/svg/animation/SMILTimeContainer.h

 /*
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 48 matching lines @@
     void begin();
     void pause();
     void resume();
     void setElapsed(SMILTime);
 
     void setDocumentOrderIndexesDirty() { m_documentOrderIndexesDirty = true; }
 
 private:
     SMILTimeContainer(SVGSVGElement* owner);
 
+    bool isTimelineRunning() const;
+    void scheduleAnimationFrame(SMILTime fireTime);
+    void scheduleAnimationFrame();
+    void cancelAnimationFrame();
     void timerFired(Timer<SMILTimeContainer>*);
-    void startTimer(SMILTime fireTime, SMILTime minimumDelay = 0);
     void updateAnimations(SMILTime elapsed, bool seekToTime = false);
 
     void updateDocumentOrderIndexes();
     double lastResumeTime() const { return m_resumeTime ? m_resumeTime : m_beginTime; }
 
     double m_beginTime;
     double m_pauseTime;
     double m_resumeTime;
     double m_accumulatedActiveTime;
     double m_presetStartTime;
 
     bool m_documentOrderIndexesDirty;
 
     Timer<SMILTimeContainer> m_timer;
 
     typedef pair<SVGElement*, QualifiedName> ElementAttributePair;
     typedef Vector<SVGSMILElement*> AnimationsVector;
     typedef HashMap<ElementAttributePair, OwnPtr<AnimationsVector> > GroupedAnimationsMap;
     GroupedAnimationsMap m_scheduledAnimations;
 
     SVGSVGElement* m_ownerSVGElement;
 
 #ifndef NDEBUG
     bool m_preventScheduledAnimationsChanges;
 #endif
 };
 }
 
 #endif // SMILTimeContainer_h