Add more missing closing namespace comments.

third_party/WebKit/Source/core/css/MediaValuesDynamic.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 MediaValuesDynamic_h
 #define MediaValuesDynamic_h
 
 #include "core/css/MediaValues.h"
 
 namespace blink {
@@ skipping 30 matching lines @@
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     MediaValuesDynamic(LocalFrame*);
 
     // This raw ptr is safe, as MediaValues would not outlive MediaQueryEvaluator, and
     // MediaQueryEvaluator is reset on |Document::detach|.
     RawPtrWillBeMember<LocalFrame> m_frame;
 };
 
-} // namespace
+} // namespace blink
 
 #endif // MediaValuesDynamic_h