Web animations: Supply CSS transition easing

Source/core/animation/KeyframeEffectModel.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 84 matching lines @@
         return adoptRefWillBeNoop(new KeyframeEffectModel(keyframes));
     }
 
     virtual bool affects(CSSPropertyID property) OVERRIDE
     {
         ensureKeyframeGroups();
         return m_keyframeGroups->contains(property);
     }
 
     // AnimationEffect implementation.
-    virtual PassOwnPtr<Vector<RefPtr<Interpolation> > > sample(int iteration, double fraction) const OVERRIDE;
+    virtual PassOwnPtr<Vector<RefPtr<Interpolation> > > sample(int iteration, double fraction, double iterationDuration) const OVERRIDE;
 
     // FIXME: Implement setFrames()
     const KeyframeVector& getFrames() const { return m_keyframes; }
 
     virtual bool isKeyframeEffectModel() const OVERRIDE { return true; }
 
     bool isReplaceOnly();
 
     PropertySet properties() const;
 
@@ skipping 53 matching lines @@
     mutable RefPtr<InterpolationEffect> m_interpolationEffect;
 
     friend class KeyframeEffectModelTest;
 };
 
 DEFINE_TYPE_CASTS(KeyframeEffectModel, AnimationEffect, value, value->isKeyframeEffectModel(), value.isKeyframeEffectModel());
 
 } // namespace WebCore
 
 #endif // KeyframeEffectModel_h