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

chrome/browser/profile_manager.h

 // 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.
 
 // This class keeps track of the currently-active profiles in the runtime.
 
 #ifndef CHROME_BROWSER_PROFILE_MANAGER_H__
 #define CHROME_BROWSER_PROFILE_MANAGER_H__
 #pragma once
 
-#include <string>
 #include <vector>
 
 #include "app/system_monitor.h"
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/message_loop.h"
 #include "base/non_thread_safe.h"
 #include "base/values.h"
 #include "chrome/browser/profile.h"
 #include "chrome/common/notification_observer.h"
@@ skipping 98 matching lines @@
 
   // Indicates that a user has logged in and that the profile specified
   // in the --login-profile command line argument should be used as the
   // default.
   bool logged_in_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileManager);
 };
 
 #endif  // CHROME_BROWSER_PROFILE_MANAGER_H__