Web Animations: Use StringKeyframes for element.animate()

Source/core/animation/Keyframe.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 Keyframe_h
 #define Keyframe_h
 
 #include "CSSPropertyNames.h"
 #include "core/animation/AnimationEffect.h"
 #include "core/animation/TimedItem.h"
 
 namespace WebCore {
 
 typedef HashSet<CSSPropertyID> PropertySet;
 
+class Element;
+
 // FIXME: Make Keyframe immutable
 class Keyframe : public RefCountedWillBeGarbageCollectedFinalized<Keyframe> {
 public:
     virtual ~Keyframe() { }
 
     void setOffset(double offset) { m_offset = offset; }
     double offset() const { return m_offset; }
 
     void setComposite(AnimationEffect::CompositeOperation composite) { m_composite = composite; }
     AnimationEffect::CompositeOperation composite() const { return m_composite; }
@@ skipping 22 matching lines @@
         virtual ~PropertySpecificKeyframe() { }
         double offset() const { return m_offset; }
         TimingFunction* easing() const { return m_easing.get(); }
         AnimationEffect::CompositeOperation composite() const { return m_composite; }
         virtual PassOwnPtrWillBeRawPtr<PropertySpecificKeyframe> cloneWithOffset(double offset) const = 0;
 
         virtual bool isAnimatableValuePropertySpecificKeyframe() const { return false; }
         virtual bool isStringPropertySpecificKeyframe() const { return false; }
 
         virtual PassOwnPtrWillBeRawPtr<PropertySpecificKeyframe> neutralKeyframe(double offset, PassRefPtr<TimingFunction> easing) const = 0;
-        virtual PassRefPtrWillBeRawPtr<Interpolation> createInterpolation(CSSPropertyID, WebCore::Keyframe::PropertySpecificKeyframe* end) const = 0;
+        virtual PassRefPtrWillBeRawPtr<Interpolation> createInterpolation(CSSPropertyID, WebCore::Keyframe::PropertySpecificKeyframe* end, Element*) const = 0;
 
         virtual void trace(Visitor*) = 0;
 
     protected:
         PropertySpecificKeyframe(double offset, PassRefPtr<TimingFunction> easing, AnimationEffect::CompositeOperation);
 
         double m_offset;
         RefPtr<TimingFunction> m_easing;
         AnimationEffect::CompositeOperation m_composite;
     };
@@ skipping 15 matching lines @@
     }
 
     double m_offset;
     AnimationEffect::CompositeOperation m_composite;
     RefPtr<TimingFunction> m_easing;
 };
 
 }
 
 #endif