base: Add/Fix namespace closing comments.

base/path_service.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_PATH_SERVICE_H_
 #define BASE_PATH_SERVICE_H_
 
 #include <string>
 
 #include "base/base_export.h"
 #include "base/base_paths.h"
 #include "base/gtest_prod_util.h"
 #include "build/build_config.h"
 
 namespace base {
 class FilePath;
 class ScopedPathOverride;
-}  // namespace
+}  // namespace base
 
 // The path service is a global table mapping keys to file system paths.  It is
 // OK to use this service from multiple threads.
 //
 class BASE_EXPORT PathService {
  public:
   // Retrieves a path to a special directory or file and places it into the
   // string pointed to by 'path'. If you ask for a directory it is guaranteed
   // to NOT have a path separator at the end. For example, "c:\windows\temp"
   // Directories are also guaranteed to exist when this function succeeds.
@@ skipping 54 matching lines @@
   friend class base::ScopedPathOverride;
   FRIEND_TEST_ALL_PREFIXES(PathServiceTest, RemoveOverride);
 
   // Removes an override for a special directory or file. Returns true if there
   // was an override to remove or false if none was present.
   // NOTE: This function is intended to be used by tests only!
   static bool RemoveOverride(int key);
 };
 
 #endif  // BASE_PATH_SERVICE_H_