Add more missing closing namespace comments.

third_party/WebKit/Source/core/html/MediaFragmentURIParser.cpp

 /*
  * Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 291 matching lines @@
         value1 = 0;
     }
 
     if (offset < length && timeString[offset] == '.')
         fraction = collectFraction(timeString, length, offset).toDouble();
 
     time = (value1 * secondsPerHour) + (value2 * secondsPerMinute) + value3 + fraction;
     return true;
 }
 
-}
+} // namespace blink