FBTF: Remove "obviously" unneeded standard C++ library #includes.

chrome/common/extensions/extension_file_util.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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 CHROME_COMMON_EXTENSIONS_EXTENSION_FILE_UTIL_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_FILE_UTIL_H_
 #pragma once
 
-#include <set>
 #include <string>
 
 #include "base/file_path.h"
 #include "chrome/common/extensions/extension.h"
 
 class ExtensionMessageBundle;
 
 // Utilties for manipulating the on-disk storage of extensions.
 namespace extension_file_util {
 
@@ skipping 49 matching lines @@
 // reserved list we return false, and set error message.
 bool CheckForIllegalFilenames(const FilePath& extension_path,
                               std::string* error);
 
 // Get a relative file path from a chrome-extension:// URL.
 FilePath ExtensionURLToRelativeFilePath(const GURL& url);
 
 }  // extension_file_util
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_FILE_UTIL_H_