Web animations: Supply CSS transition easing

Source/core/animation/InterpolationEffect.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 InterpolationEffect_h
 #define InterpolationEffect_h
 
 #include "core/animation/Interpolation.h"
 #include "platform/animation/TimingFunction.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class InterpolationEffect : public RefCounted<InterpolationEffect> {
 
 public:
     static PassRefPtr<InterpolationEffect> create() { return adoptRef(new InterpolationEffect()); }
 
-    PassOwnPtr<Vector<RefPtr<Interpolation> > > getActiveInterpolations(double fraction) const;
+    PassOwnPtr<Vector<RefPtr<Interpolation> > > getActiveInterpolations(double fraction, double iterationDuration) const;
 
     void addInterpolation(PassRefPtr<Interpolation> interpolation, PassRefPtr<TimingFunction> easing, double start, double end, double applyFrom, double applyTo)
     {
         m_interpolations.append(InterpolationRecord::create(interpolation, easing, start, end, applyFrom, applyTo));
     }
 
 private:
     InterpolationEffect()
     { }
 
@@ skipping 19 matching lines @@
             , m_applyTo(applyTo)
         { }
     };
 
     Vector<OwnPtr<InterpolationRecord> > m_interpolations;
 };
 
 }
 
 #endif