Move CommandLine to base namespace.

chrome/browser/chromeos/login/chrome_restart_request.h

 // Copyright 2013 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_BROWSER_CHROMEOS_LOGIN_CHROME_RESTART_REQUEST_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_CHROME_RESTART_REQUEST_H_
 
 #include <string>
 
+class GURL;
+
+namespace base {
 class CommandLine;
-class GURL;
+}
 
 namespace chromeos {
 
 // Returns the command line string to be used for the OTR process. Also modifies
 // the given command line.
 std::string GetOffTheRecordCommandLine(
     const GURL& start_url,
-    const CommandLine& base_command_line,
-    CommandLine* command_line);
+    const base::CommandLine& base_command_line,
+    base::CommandLine* command_line);
 
 // Request session manager to restart chrome with a new command line.
 void RestartChrome(const std::string& command_line);
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_CHROME_RESTART_REQUEST_H_