Update a result vector when sampling animation effects.

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 blink {
 
 class InterpolationEffect : public RefCountedWillBeGarbageCollected<InterpolationEffect> {
 public:
-    static PassRefPtrWillBeRawPtr<InterpolationEffect> create() { return adoptRefWillBeNoop(new InterpolationEffect()); }
+    static PassRefPtrWillBeRawPtr<InterpolationEffect> create()
+    {
+        return adoptRefWillBeNoop(new InterpolationEffect());
+    }
 
-    PassOwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > getActiveInterpolations(double fraction, double iterationDuration) const;
+    void getActiveInterpolations(double fraction, double iterationDuration, OwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation>>>&) const;
 
     void addInterpolation(PassRefPtrWillBeRawPtr<Interpolation> interpolation, PassRefPtr<TimingFunction> easing, double start, double end, double applyFrom, double applyTo)
     {
         m_interpolations.append(InterpolationRecord::create(interpolation, easing, start, end, applyFrom, applyTo));
     }
 
     void trace(Visitor*);
 
 private:
     InterpolationEffect()
@@ skipping 27 matching lines @@
         {
         }
     };
 
     WillBeHeapVector<OwnPtrWillBeMember<InterpolationRecord> > m_interpolations;
 };
 
 }
 
 #endif