Animations: Introduce compositor AnimationPlayer and AnimationTimeline.

Source/core/animation/AnimationTimeline.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 19 matching lines @@
 
 #ifndef AnimationTimeline_h
 #define AnimationTimeline_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/animation/AnimationEffect.h"
 #include "core/animation/AnimationPlayer.h"
 #include "core/dom/Element.h"
 #include "platform/Timer.h"
 #include "platform/heap/Handle.h"
+#include "public/platform/WebCompositorAnimationTimeline.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class Document;
 class AnimationNode;
 
 // AnimationTimeline is constructed and owned by Document, and tied to its lifecycle.
@@ skipping 19 matching lines @@
 
     AnimationPlayer* play(AnimationNode*);
     WillBeHeapVector<RefPtrWillBeMember<AnimationPlayer>> getAnimationPlayers();
 
     void playerAttached(AnimationPlayer&);
 #if !ENABLE(OILPAN)
     void playerDestroyed(AnimationPlayer* player)
     {
         ASSERT(m_players.contains(player));
         m_players.remove(player);
+
+        if (m_compositorTimeline)
+            m_compositorTimeline->playerDestroyed(*player);
     }
 #endif
 
     bool hasPendingUpdates() const { return !m_playersNeedingUpdate.isEmpty(); }
     double zeroTime();
     double currentTime(bool& isNull);
     double currentTime();
     double currentTimeInternal(bool& isNull);
     double currentTimeInternal();
     void setCurrentTime(double);
     void setCurrentTimeInternal(double);
     double effectiveTime();
     void pauseAnimationsForTesting(double);
 
     void setOutdatedAnimationPlayer(AnimationPlayer*);
     bool hasOutdatedAnimationPlayer() const;
     bool needsAnimationTimingUpdate();
 
     void setPlaybackRate(double);
     double playbackRate() const;
 
+    WebCompositorAnimationTimeline* compositorTimeline() const { return m_compositorTimeline.get(); }
+    void updateCompositorPlayerToElementAttachments();
+
     Document* document() { return m_document.get(); }
 #if !ENABLE(OILPAN)
     void detachFromDocument();
 #endif
     void wake();
 
     DECLARE_TRACE();
 
 protected:
     AnimationTimeline(Document*, PassOwnPtrWillBeRawPtr<PlatformTiming>);
 
 private:
     RawPtrWillBeMember<Document> m_document;
     double m_zeroTime;
     bool m_zeroTimeInitialized;
     // AnimationPlayers which will be updated on the next frame
     // i.e. current, in effect, or had timing changed
     WillBeHeapHashSet<RefPtrWillBeMember<AnimationPlayer>> m_playersNeedingUpdate;
     WillBeHeapHashSet<RawPtrWillBeWeakMember<AnimationPlayer>> m_players;
 
     double m_playbackRate;
 
     friend class SMILTimeContainer;
     static const double s_minimumDelay;
 
     OwnPtrWillBeMember<PlatformTiming> m_timing;
     double m_lastCurrentTimeInternal;
 
+    OwnPtr<WebCompositorAnimationTimeline> m_compositorTimeline;
+
     class AnimationTimelineTiming final : public PlatformTiming {
     public:
         AnimationTimelineTiming(AnimationTimeline* timeline)
             : m_timeline(timeline)
             , m_timer(this, &AnimationTimelineTiming::timerFired)
         {
             ASSERT(m_timeline);
         }
 
         virtual void wakeAfter(double duration) override;
         virtual void cancelWake() override;
         virtual void serviceOnNextFrame() override;
 
         void timerFired(Timer<AnimationTimelineTiming>*) { m_timeline->wake(); }
 
         DECLARE_VIRTUAL_TRACE();
 
     private:
         RawPtrWillBeMember<AnimationTimeline> m_timeline;
         Timer<AnimationTimelineTiming> m_timer;
     };
 
     friend class AnimationAnimationTimelineTest;
 };
 
 } // namespace blink
 
 #endif