Add more missing closing namespace comments.

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

 /*
  * 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 404 matching lines @@
     range = gUnicodeSubrangeTable[range - cRangeTableBase][(ch & 0x0f00) >> 8];
     if (range < cRangeTableBase)
         return range;
     if (range < cRangeTertiaryTable)
         return gUnicodeSubrangeTable[range - cRangeTableBase][(ch & 0x00f0) >> 4];
 
     // Yet another table to look at : U+0700 - U+16FF : 128 code point blocks
     return gUnicodeTertiaryRangeTable[(ch - 0x0700) >> 7];
 }
 
-}
+} // namespace blink