Revert of Web Animations: Remove AnimationPlayer discarding logic

Source/core/animation/SampledEffect.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef SampledEffect_h
 #define SampledEffect_h
 
 #include "core/animation/Animation.h"
 #include "core/animation/AnimationPlayer.h"
 #include "core/animation/Interpolation.h"
 #include "wtf/BitArray.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class SampledEffect : public NoBaseWillBeGarbageCollected<SampledEffect> {
 public:
     static PassOwnPtrWillBeRawPtr<SampledEffect> create(Animation* animation, PassOwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > interpolations)
     {
         return adoptPtrWillBeNoop(new SampledEffect(animation, interpolations));
     }
 
+    bool canChange() const;
     void clear();
 
     const WillBeHeapVector<RefPtrWillBeMember<Interpolation> >& interpolations() const { return *m_interpolations; }
 #if ENABLE(OILPAN)
     RawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation>>> mutableInterpolations() { return m_interpolations.get(); }
 #else
     PassOwnPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation>>> mutableInterpolations() { return m_interpolations.release(); }
 #endif
 
     void setInterpolations(PassOwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > interpolations) { m_interpolations = interpolations; }
 
     Animation* animation() const { return m_animation; }
     unsigned sequenceNumber() const { return m_sequenceNumber; }
     Animation::Priority priority() const { return m_priority; }
 
+    void removeReplacedInterpolationsIfNeeded(const BitArray<numCSSProperties>&);
+
     DECLARE_TRACE();
 
 private:
     SampledEffect(Animation*, PassOwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > >);
 
     RawPtrWillBeWeakMember<Animation> m_animation;
-    RefPtrWillBeMember<AnimationPlayer> m_player;
+#if !ENABLE(OILPAN)
+    RefPtr<AnimationPlayer> m_player;
+#endif
     OwnPtrWillBeMember<WillBeHeapVector<RefPtrWillBeMember<Interpolation>>> m_interpolations;
     const unsigned m_sequenceNumber;
     Animation::Priority m_priority;
 };
 
 } // namespace blink
 
 #endif // SampledEffect_h