Revert of Update AuraInit to handle failed initialization

mash/simple_wm/simple_wm.cc

 // Copyright 2016 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 "mash/simple_wm/simple_wm.h"
 
 #include "base/observer_list.h"
 #include "base/strings/utf_string_conversions.h"
 #include "mash/simple_wm/move_event_handler.h"
 #include "ui/aura/client/aura_constants.h"
@@ skipping 346 matching lines @@
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // SimpleWM, service_manager::Service implementation:
 
 void SimpleWM::OnStart() {
   CHECK(!started_);
   started_ = true;
   screen_ = base::MakeUnique<display::ScreenBase>();
   display::Screen::SetScreenInstance(screen_.get());
-  aura_init_ = views::AuraInit::Create(
+  aura_init_ = base::MakeUnique<views::AuraInit>(
       context()->connector(), context()->identity(), "views_mus_resources.pak",
       std::string(), nullptr, views::AuraInit::Mode::AURA_MUS_WINDOW_MANAGER);
-  if (!aura_init_) {
-    context()->QuitNow();
-    return;
-  }
   window_tree_client_ = base::MakeUnique<aura::WindowTreeClient>(
       context()->connector(), this, this);
   aura::Env::GetInstance()->SetWindowTreeClient(window_tree_client_.get());
   window_tree_client_->ConnectAsWindowManager();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // SimpleWM, aura::WindowTreeClientDelegate implementation:
 
 void SimpleWM::OnEmbed(
@@ skipping 208 matching lines @@
 }
 
 void SimpleWM::OnWindowListViewItemActivated(aura::Window* window) {
   window->Show();
   wm::ActivationClient* activation_client =
       wm::GetActivationClient(window->GetRootWindow());
   activation_client->ActivateWindow(window);
 }
 
 }  // namespace simple_wm