Do not reload account picker when device-local account policy changes

chrome/browser/chromeos/login/users/user_manager_impl.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/user_manager_impl.h"
 
 #include <cstddef>
 #include <set>
 
 #include "ash/multi_profile_uma.h"
@@ skipping 864 matching lines @@
     WallpaperManager::Get()->OnPolicyFetched(policy, user_id, data.Pass());
   else
     NOTREACHED();
 }
 
 void UserManagerImpl::OnPolicyUpdated(const std::string& user_id) {
   const user_manager::User* user = FindUserInList(user_id);
   if (!user || user->GetType() != user_manager::USER_TYPE_PUBLIC_ACCOUNT)
     return;
   UpdatePublicAccountDisplayName(user_id);
-  NotifyUserListChanged();

[Nikita (slow), 2014/07/30 09:27:58]

Please rebase with https://codereview.chromium.org/417623002/

[Nikita (slow), 2014/08/01 12:20:22]

My CL got reverted, I've found few issues with it, fixed.
Most notably I've postponed RetrieveTrustedDevicePolicies() call from ctor.

I'm planning to put it into CQ today.

[bartfab (slow), 2014/08/04 13:46:49]

Done.

 }
 
 void UserManagerImpl::OnDeviceLocalAccountsChanged() {
   // No action needed here, changes to the list of device-local accounts get
   // handled via the kAccountsPrefDeviceLocalAccounts device setting observer.
 }
 
 bool UserManagerImpl::IsCurrentUserOwner() const {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   base::AutoLock lk(is_current_user_owner_lock_);
@@ skipping 934 matching lines @@
 }
 
 void UserManagerImpl::DeleteUser(user_manager::User* user) {
   const bool is_active_user = (user == active_user_);
   delete user;
   if (is_active_user)
     active_user_ = NULL;
 }
 
 }  // namespace chromeos