Make some code gender neutral.

chrome/browser/signin/easy_unlock_service.h

 // Copyright 2014 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_SIGNIN_EASY_UNLOCK_SERVICE_H_
 #define CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SERVICE_H_
 
 #include <memory>
 #include <set>
 #include <string>
@@ skipping 60 matching lines @@
 
     // Whether to require the remote device to be in very close proximity
     // before allowing unlock (~1 feet).
     bool require_close_proximity;
   };
 
   // Gets EasyUnlockService instance.
   static EasyUnlockService* Get(Profile* profile);
 
   // Gets EasyUnlockService instance associated with a user if the user is
-  // logged in and his profile is initialized.
+  // logged in and their profile is initialized.
   static EasyUnlockService* GetForUser(const user_manager::User& user);
 
   // Registers Easy Unlock profile preferences.
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
   // Registers Easy Unlock local state entries.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
   // Removes the hardlock state for the given user.
   static void ResetLocalStateForUser(const AccountId& account_id);
@@ skipping 283 matching lines @@
   bool tpm_key_checked_;
 
   base::ObserverList<EasyUnlockServiceObserver> observers_;
 
   base::WeakPtrFactory<EasyUnlockService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(EasyUnlockService);
 };
 
 #endif  // CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SERVICE_H_