Add more missing closing namespace comments.

third_party/WebKit/Source/platform/text/UnicodeRange.h

 /*
  * Copyright (C) 2007 Apple Computer, Inc.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
@@ skipping 95 matching lines @@
 const unsigned char   cRangeCombiningDiacriticalMarks = 56;
 const unsigned char   cRangeSpecials             = 57;
 
 const unsigned char   cRangeTableBase   = 128; // values over 127 are reserved for internal use only
 const unsigned char   cRangeTertiaryTable  = 145; // leave room for 16 subtable indices (cRangeTableBase + 1 .. cRangeTableBase + 16)
 
 
 
 PLATFORM_EXPORT unsigned findCharUnicodeRange(UChar32);
 
-}
+} // namespace blink
 
 #endif // UnicodeRange_h