Web Animations CSS: Start running animations on the compositor

Source/core/animation/Player.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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef Player_h
 #define Player_h
 
+#include "CSSPropertyNames.h"
 #include "core/animation/TimedItem.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 class DocumentTimeline;
+class Element;
 
 class Player FINAL : public RefCounted<Player> {
 
 public:
     ~Player();
     static PassRefPtr<Player> create(DocumentTimeline&, TimedItem*);
 
+    static double effectiveTime(double time) { return isNull(time) ? 0 : time; }
+
     // Returns whether this player is still current or in effect.
     // timeToEffectChange returns:
     //  infinity  - if this player is no longer in effect
     //  0         - if this player requires an update on the next frame
     //  n         - if this player requires an update after 'n' units of time
     bool update(double* timeToEffectChange = 0, bool* didTriggerStyleRecalc = 0);
     void cancel();
 
     double currentTime() const;
     void setCurrentTime(double);
@@ skipping 11 matching lines @@
     void setStartTime(double);
 
     TimedItem* source() { return m_content.get(); }
 
     // Pausing via this method is not reflected in the value returned by
     // paused() and must never overlap with pausing via setPaused().
     void pauseForTesting();
     // Reflects all pausing, including via pauseForTesting().
     bool pausedInternal() const { return !isNull(m_pauseStartTime); }
 
+    bool isCandidateForCompositorAnimation() const;
+    bool startCompositorAnimations();
+    bool isRunningCompositorAnimation(const Element* = 0, CSSPropertyID = CSSPropertyInvalid);
+    void cancelCompositorAnimations();
+
 private:
     Player(DocumentTimeline&, TimedItem*);
     inline double pausedTimeDrift() const;
     inline double currentTimeBeforeDrift() const;
 
     void setPausedImpl(bool);
 
     double m_pauseStartTime;
     double m_playbackRate;
     double m_timeDrift;
     double m_startTime;
 
     RefPtr<TimedItem> m_content;
     DocumentTimeline& m_timeline;
     bool m_isPausedForTesting;
 };
 
 } // namespace
 
 #endif