mash: Use ChromeLauncherControllerImpl, remove Mus subclass stub.

chrome/browser/ui/ash/multi_user/multi_user_window_manager.cc

 // Copyright 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.
 
 #include "chrome/browser/ui/ash/multi_user/multi_user_window_manager.h"
 
 #include "ash/multi_profile_uma.h"
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "base/logging.h"
 #include "build/build_config.h"
+#include "chrome/browser/ui/ash/ash_util.h"
 #include "chrome/browser/ui/ash/multi_user/multi_user_window_manager_chromeos.h"
 #include "chrome/browser/ui/ash/multi_user/multi_user_window_manager_stub.h"
 #include "components/signin/core/account_id/account_id.h"
 #include "components/user_manager/user_info.h"
 #include "components/user_manager/user_manager.h"
 
 namespace {
 chrome::MultiUserWindowManager* g_instance = NULL;
 }  // namespace
 
 namespace chrome {
 
 // Caching the current multi profile mode to avoid expensive detection
 // operations.
 chrome::MultiUserWindowManager::MultiProfileMode
     chrome::MultiUserWindowManager::multi_user_mode_ =
         chrome::MultiUserWindowManager::MULTI_PROFILE_MODE_UNINITIALIZED;
 
 // static
 MultiUserWindowManager* MultiUserWindowManager::GetInstance() {
   return g_instance;
 }
 
 MultiUserWindowManager* MultiUserWindowManager::CreateInstance() {
   DCHECK(!g_instance);
   multi_user_mode_ = MULTI_PROFILE_MODE_OFF;
   ash::MultiProfileUMA::SessionMode mode =
       ash::MultiProfileUMA::SESSION_SINGLE_USER_MODE;
-  if (ash::Shell::Get()->shell_delegate()->IsMultiProfilesEnabled()) {
+  // TODO(crbug.com/557406): Enable this component in Mash.
+  if (!ash_util::IsRunningInMash() &&
+      ash::Shell::Get()->shell_delegate()->IsMultiProfilesEnabled()) {
     if (!g_instance) {
       MultiUserWindowManagerChromeOS* manager =
           new MultiUserWindowManagerChromeOS(user_manager::UserManager::Get()
                                                  ->GetActiveUser()
                                                  ->GetAccountId());
       g_instance = manager;
       manager->Init();
       multi_user_mode_ = MULTI_PROFILE_MODE_SEPARATED;
       mode = ash::MultiProfileUMA::SESSION_SEPARATE_DESKTOP_MODE;
     } else {
@@ skipping 42 matching lines @@
 void MultiUserWindowManager::SetInstanceForTest(
     MultiUserWindowManager* instance,
     MultiProfileMode mode) {
   if (g_instance)
     DeleteInstance();
   g_instance = instance;
   multi_user_mode_ = mode;
 }
 
 }  // namespace chrome