Add more missing closing namespace comments.

third_party/WebKit/Source/core/animation/animatable/AnimatableValueKeyframe.cpp

 // 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.
 
 #include "core/animation/animatable/AnimatableValueKeyframe.h"
 
 #include "core/animation/LegacyStyleInterpolation.h"
 
 namespace blink {
 
@@ skipping 45 matching lines @@
 {
     AnimatableValuePropertySpecificKeyframe& to = toAnimatableValuePropertySpecificKeyframe(end);
     return LegacyStyleInterpolation::create(value(), to.value(), property.cssProperty());
 }
 
 PassOwnPtr<Keyframe::PropertySpecificKeyframe> AnimatableValueKeyframe::PropertySpecificKeyframe::neutralKeyframe(double offset, PassRefPtr<TimingFunction> easing) const
 {
     return adoptPtr(new AnimatableValueKeyframe::PropertySpecificKeyframe(offset, easing, AnimatableValue::neutralValue(), EffectModel::CompositeAdd));
 }
 
-}
+} // namespace blink