Add more missing closing namespace comments.

third_party/WebKit/Source/core/animation/PropertyHandleTest.cpp

 // Copyright 2015 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/PropertyHandle.h"
 
 #include "core/SVGNames.h"
 #include "core/XLinkNames.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 36 matching lines @@
 {
     EXPECT_TRUE(PropertyHandle(CSSPropertyOpacity).isCSSProperty());
     EXPECT_EQ(PropertyHandle(CSSPropertyOpacity).cssProperty(), CSSPropertyOpacity);
     EXPECT_FALSE(PropertyHandle(amplitudeAttr).isCSSProperty());
 
     EXPECT_FALSE(PropertyHandle(CSSPropertyOpacity).isSVGAttribute());
     EXPECT_TRUE(PropertyHandle(amplitudeAttr).isSVGAttribute());
     EXPECT_EQ(PropertyHandle(amplitudeAttr).svgAttribute(), amplitudeAttr);
 }
 
-}
+} // namespace blink