Web Animations CSS: Start running animations on the compositor

Source/core/animation/TimedItem.h

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 52 matching lines @@
     };
 
     class EventDelegate {
     public:
         virtual ~EventDelegate() { };
         virtual void onEventCondition(const TimedItem*, bool isFirstSample, Phase previousPhase, double previousIteration) = 0;
     };
 
     virtual ~TimedItem() { }
 
+    virtual bool isAnimation() const { return false; }
+
     Phase phase() const { return ensureCalculated().phase; }
     bool isCurrent() const { return ensureCalculated().isCurrent; }
     bool isInEffect() const { return ensureCalculated().isInEffect; }
     bool isInPlay() const { return ensureCalculated().isInPlay; }
     double timeToEffectChange() const { return ensureCalculated().timeToEffectChange; }
 
-    double startTime() const { return m_startTime; }
-
     double currentIteration() const { return ensureCalculated().currentIteration; }
     double activeDuration() const { return ensureCalculated().activeDuration; }
     double timeFraction() const { return ensureCalculated().timeFraction; }
+    double startTime() const { return m_startTime; }
     const Player* player() const { return m_player; }
     Player* player() { return m_player; }
-
     const Timing& specified() const { return m_specified; }
 
 protected:
     TimedItem(const Timing&, PassOwnPtr<EventDelegate> = nullptr);
 
     // When TimedItem receives a new inherited time via updateInheritedTime
     // it will (if necessary) recalculate timings and (if necessary) call
     // updateChildrenAndEffects.
     // Returns whether style recalc was triggered.
     bool updateInheritedTime(double inheritedTime) const;
@@ skipping 39 matching lines @@
     } m_calculated;
     mutable bool m_isFirstSample;
 
     // FIXME: Should check the version and reinherit time if inconsistent.
     const CalculatedTiming& ensureCalculated() const { return m_calculated; }
 };
 
 } // namespace WebCore
 
 #endif