Animations: Introduce compositor AnimationPlayer and AnimationTimeline.

Source/core/animation/AnimationPlayer.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 21 matching lines @@
 #define AnimationPlayer_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseProperty.h"
 #include "core/CSSPropertyNames.h"
 #include "core/animation/AnimationNode.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/dom/DOMException.h"
 #include "core/events/EventTarget.h"
 #include "platform/heap/Handle.h"
+#include "public/platform/WebCompositorAnimationDelegate.h"
+#include "public/platform/WebCompositorAnimationPlayerClient.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class AnimationTimeline;
 class Element;
 class ExceptionState;
+class WebCompositorAnimationPlayer;
 
 class AnimationPlayer final
     : public EventTargetWithInlineData
     , public RefCountedWillBeNoBase<AnimationPlayer>
-    , public ActiveDOMObject {
+    , public ActiveDOMObject
+    , public WebCompositorAnimationDelegate
+    , public WebCompositorAnimationPlayerClient {
     DEFINE_WRAPPERTYPEINFO();
     REFCOUNTED_EVENT_TARGET(AnimationPlayer);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(AnimationPlayer);
 public:
     enum AnimationPlayState {
         Idle,
         Pending,
         Running,
         Paused,
         Finished
@@ skipping 69 matching lines @@
 
     // Pausing via this method is not reflected in the value returned by
     // paused() and must never overlap with pausing via pause().
     void pauseForTesting(double pauseTime);
     // This should only be used for CSS
     void unpause();
 
     void setOutdated();
     bool outdated() { return m_outdated; }
 
-    bool canStartAnimationOnCompositor();
+    bool canStartAnimationOnCompositor() const;
+    bool isCandidateForAnimationOnCompositor() const;
     bool maybeStartAnimationOnCompositor();
     void cancelAnimationOnCompositor();
     void restartAnimationOnCompositor();
     void cancelIncompatibleAnimationsOnCompositor();
     bool hasActiveAnimationsOnCompositor();
     void setCompositorPending(bool sourceChanged = false);
     void notifyCompositorStartTime(double timelineTime);
     void notifyStartTime(double timelineTime);
+    // WebCompositorAnimationPlayerClient implementation.
+    WebCompositorAnimationPlayer* compositorPlayer() const override { return m_compositorPlayer.get(); }
 
     bool affects(const Element&, CSSPropertyID) const;
 
     void preCommit(int compositorGroup, bool startOnCompositor);
     void postCommit(double timelineTime);
 
     unsigned sequenceNumber() const { return m_sequenceNumber; }
     int compositorGroup() const { return m_compositorGroup; }
 
     static bool hasLowerPriority(const AnimationPlayer* player1, const AnimationPlayer* player2)
@@ skipping 14 matching lines @@
     AnimationPlayState calculatePlayState();
     double calculateCurrentTime() const;
 
     void unpauseInternal();
     void setPlaybackRateInternal(double);
     void updateCurrentTimingState(TimingUpdateReason);
 
     void beginUpdatingState();
     void endUpdatingState();
 
+    void createCompositorPlayer();
+    void destroyCompositorPlayer();
+    void attachCompositorTimeline();
+    void detachCompositorTimeline();
+    void attachCompositedLayers();
+    void detachCompositedLayers();
+    // WebCompositorAnimationDelegate implementation.
+    void notifyAnimationStarted(double monotonicTime, int group) override;
+    void notifyAnimationFinished(double monotonicTime, int group) override { }
+
     AnimationPlayState m_playState;
     double m_playbackRate;
     double m_startTime;
     double m_holdTime;
 
     unsigned m_sequenceNumber;
 
     typedef ScriptPromiseProperty<RawPtrWillBeMember<AnimationPlayer>, RawPtrWillBeMember<AnimationPlayer>, RefPtrWillBeMember<DOMException>> AnimationPlayerPromise;
     PersistentWillBeMember<AnimationPlayerPromise> m_finishedPromise;
     PersistentWillBeMember<AnimationPlayerPromise> m_readyPromise;
@@ skipping 55 matching lines @@
         CompositorPendingChange m_compositorPendingChange;
     };
 
     // This mirrors the known compositor state. It is created when a compositor
     // animation is started. Updated once the start time is known and each time
     // modifications are pushed to the compositor.
     OwnPtr<CompositorState> m_compositorState;
     bool m_compositorPending;
     int m_compositorGroup;
 
+    OwnPtr<WebCompositorAnimationPlayer> m_compositorPlayer;
+
     bool m_currentTimePending;
     bool m_stateIsBeingUpdated;
-
 };
 
 } // namespace blink
 
 #endif // AnimationPlayer_h