Add more missing closing namespace comments.

third_party/WebKit/Source/core/css/parser/MediaQueryBlockWatcher.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/css/parser/MediaQueryBlockWatcher.h"
 
 #include "core/css/parser/CSSParserToken.h"
 
 namespace blink {
 
 MediaQueryBlockWatcher::MediaQueryBlockWatcher()
     : m_blockLevel(0)
 {
 }
 
 void MediaQueryBlockWatcher::handleToken(const CSSParserToken& token)
 {
     if (token.blockType() == CSSParserToken::BlockStart) {
         ++m_blockLevel;
     } else if (token.blockType() == CSSParserToken::BlockEnd) {
         ASSERT(m_blockLevel);
         --m_blockLevel;
     }
 }
 
-} // namespace
-
+} // namespace blink