Add more missing closing namespace comments.

third_party/WebKit/Source/core/html/parser/BackgroundHTMLInputStream.cpp

 /*
  * Copyright (C) 2013 Google, 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 96 matching lines @@
 }
 
 void BackgroundHTMLInputStream::updateTotalCheckpointTokenCount()
 {
     m_totalCheckpointTokenCount = 0;
     size_t lastCheckpointIndex = m_checkpoints.size();
     for (size_t i = 0; i < lastCheckpointIndex; ++i)
         m_totalCheckpointTokenCount += m_checkpoints[i].tokensExtractedSincePreviousCheckpoint;
 }
 
-}
+} // namespace blink