Add more missing closing namespace comments.

third_party/WebKit/Source/core/animation/DoubleStyleInterpolation.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/DoubleStyleInterpolation.h"
 
 #include "core/css/CSSValueList.h"
 #include "core/css/resolver/StyleBuilder.h"
 #include "core/style/ComputedStyleConstants.h"
 
@@ skipping 134 matching lines @@
         || !extractMotionRotation(end, &endRotation, &endRotationType)
         || startRotationType != endRotationType)
         return nullptr;
 
     return adoptRef(new DoubleStyleInterpolation(
         motionRotationToInterpolableValue(start),
         motionRotationToInterpolableValue(end),
         id, true, InterpolationRange::RangeAll, startRotationType == MotionRotationAuto));
 }
 
-}
+} // namespace blink