[Cleanup] Const-correct the profile() method for the EasyUnlockService

chrome/browser/ui/ash/user_accounts_delegate_chromeos.cc

 // 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.
 
 #include "chrome/browser/ui/ash/user_accounts_delegate_chromeos.h"
 
 #include <algorithm>
 #include <iterator>
 
 #include "base/logging.h"
@@ skipping 36 matching lines @@
       std::remove(accounts.begin(), accounts.end(), GetPrimaryAccountId());
   LOG_IF(WARNING, std::distance(it, accounts.end()) != 1)
       << "Found " << std::distance(it, accounts.end())
       << " primary accounts in the account list.";
   accounts.erase(it, accounts.end());
   return accounts;
 }
 
 std::string UserAccountsDelegateChromeOS::GetAccountDisplayName(
     const std::string& account_id) {
-  user_manager::User* user =
+  const user_manager::User* user =
       ProfileHelper::Get()->GetUserByProfile(user_profile_);
   if (gaia::AreEmailsSame(user->email(), account_id) &&
       !user->display_email().empty())
     return user->display_email();
   return account_id;
 }
 
 void UserAccountsDelegateChromeOS::DeleteAccount(
     const std::string& account_id) {
   MutableProfileOAuth2TokenService* oauth2_token_service =
@@ skipping 10 matching lines @@
     const std::string& account_id) {
   NotifyAccountListChanged();
 }
 
 void UserAccountsDelegateChromeOS::OnRefreshTokenRevoked(
     const std::string& account_id) {
   NotifyAccountListChanged();
 }
 
 }  // namespace chromeos