Switch to standard integer types in chrome/browser/, part 3 of 4.

chrome/browser/profiles/profile_list.h

 // Copyright (c) 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_PROFILES_PROFILE_LIST_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_LIST_H_
 
+#include <stddef.h>
+
 #include "chrome/browser/profiles/avatar_menu.h"
 
 class ProfileInfoInterface;
 
 // This model represents the profiles added to Chrome.
 class ProfileList {
  public:
   virtual ~ProfileList() {}
 
   static ProfileList* Create(ProfileInfoInterface* profile_cache);
 
   // Returns the number of profiles in the model.
   virtual size_t GetNumberOfItems() const = 0;
 
   // Returns the Item at the specified index.
   virtual const AvatarMenu::Item& GetItemAt(size_t index) const = 0;
 
   // Rebuilds the menu from the data source.
   virtual void RebuildMenu() = 0;
 
   // Returns the index in the menu of the specified profile.
   virtual size_t MenuIndexFromProfileIndex(size_t index) = 0;
 
   // Updates the path of the active browser's profile.
   virtual void ActiveProfilePathChanged(base::FilePath& path) = 0;
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_LIST_H_