Add more missing closing namespace comments.

third_party/WebKit/Source/core/animation/LengthStyleInterpolation.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 LengthStyleInterpolation_h
 #define LengthStyleInterpolation_h
 
 #include "core/CoreExport.h"
 #include "core/animation/StyleInterpolation.h"
 #include "core/css/CSSPrimitiveValue.h"
@@ skipping 23 matching lines @@
 private:
     LengthStyleInterpolation(PassOwnPtr<InterpolableValue> start, PassOwnPtr<InterpolableValue> end, CSSPropertyID id, InterpolationRange range)
         : StyleInterpolation(start, end, id)
         , m_range(range)
     {
     }
 
     InterpolationRange m_range;
 };
 
-}
+} // namespace blink
 
 #endif