Web Animations API: Sort keyframes by offset

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/AnimatableValue.h"
 #include "core/animation/AnimationEffect.h"
@@ skipping 12 matching lines @@
 
     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; }
 
     void setEasing(PassRefPtr<TimingFunction> easing) { m_easing = easing; }
     TimingFunction* easing() const { return m_easing.get(); }
 
-    static bool compareOffsets(const RefPtrWillBeMember<Keyframe>&, const RefPtrWillBeMember<Keyframe>&);
+    static bool compareOffsets(const RefPtrWillBeMember<Keyframe>& a, const RefPtrWillBeMember<Keyframe>& b)
+    {
+        return a->offset() < b->offset();
+    }
+
     virtual PropertySet properties() const = 0;
 
     virtual PassRefPtrWillBeRawPtr<Keyframe> clone() const = 0;
     PassRefPtrWillBeRawPtr<Keyframe> cloneWithOffset(double offset) const
     {
         RefPtrWillBeRawPtr<Keyframe> theClone = clone();
         theClone->setOffset(offset);
         return theClone.release();
     }
 
@@ skipping 45 matching lines @@
     }
 
     double m_offset;
     AnimationEffect::CompositeOperation m_composite;
     RefPtr<TimingFunction> m_easing;
 };
 
 }
 
 #endif