Add more missing closing namespace comments.

third_party/WebKit/Source/modules/filesystem/DOMFileSystemSync.cpp

 /*
  * Copyright (C) 2010 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 184 matching lines @@
 
 private:
     explicit LocalErrorCallback(FileError::ErrorCode& errorCode)
         : m_errorCode(errorCode)
     {
     }
 
     FileError::ErrorCode& m_errorCode;
 };
 
-}
+} // namespace
 
 FileWriterSync* DOMFileSystemSync::createWriter(const FileEntrySync* fileEntry, ExceptionState& exceptionState)
 {
     ASSERT(fileEntry);
 
     FileWriterSync* fileWriter = FileWriterSync::create();
     ReceiveFileWriterCallback* successCallback = ReceiveFileWriterCallback::create();
     FileError::ErrorCode errorCode = FileError::OK;
     LocalErrorCallback* errorCallback = LocalErrorCallback::create(errorCode);
 
     OwnPtr<AsyncFileSystemCallbacks> callbacks = FileWriterBaseCallbacks::create(fileWriter, successCallback, errorCallback, m_context);
     callbacks->setShouldBlockUntilCompletion(true);
 
     fileSystem()->createFileWriter(createFileSystemURL(fileEntry), fileWriter, callbacks.release());
     if (errorCode != FileError::OK) {
         FileError::throwDOMException(exceptionState, errorCode);
         return 0;
     }
     return fileWriter;
 }
 
 DEFINE_TRACE(DOMFileSystemSync)
 {
     DOMFileSystemBase::trace(visitor);
     visitor->trace(m_rootEntry);
 }
 
-}
+} // namespace blink