chrome/browser/chromeos: Change auto to not deduce raw pointers.

chrome/browser/chromeos/login/users/mock_user_manager.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/chromeos/login/users/mock_user_manager.h"
 
 #include "base/task_runner.h"
 #include "chrome/browser/chromeos/login/users/fake_supervised_user_manager.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 
@@ skipping 125 matching lines @@
 
 void MockUserManager::ClearUserList() {
   // Can't use STLDeleteElements because of the protected destructor of User.
   for (user_manager::UserList::iterator user = user_list_.begin();
        user != user_list_.end(); ++user)
     delete *user;
   user_list_.clear();
 }
 
 bool MockUserManager::ShouldReportUser(const std::string& user_id) const {
-  for (const auto& user : user_list_) {
+  for (auto* user : user_list_) {
     if (user->email() == user_id)
       return user->IsAffiliated();
   }
   NOTREACHED();
   return false;
 }
 
 }  // namespace chromeos