mus::GpuService: Support establish GpuChannel asynchronously.

ash/mus/window_manager_application.cc

 // Copyright 2015 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 "ash/mus/window_manager_application.h"
 
 #include <utility>
 
 #include "ash/mus/accelerator_registrar_impl.h"
 #include "ash/mus/root_window_controller.h"
 #include "ash/mus/root_windows_observer.h"
 #include "ash/mus/shelf_layout_impl.h"
 #include "ash/mus/user_window_controller_impl.h"
 #include "ash/mus/window_manager.h"
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "components/mus/common/event_matcher_util.h"
+#include "components/mus/common/gpu_service.h"
 #include "components/mus/public/cpp/window.h"
 #include "components/mus/public/cpp/window_tree_client.h"
 #include "services/shell/public/cpp/connection.h"
 #include "services/shell/public/cpp/connector.h"
 #include "services/tracing/public/cpp/tracing_impl.h"
 #include "ui/events/event.h"
 #include "ui/views/mus/aura_init.h"
 
 namespace ash {
 namespace mus {
@@ skipping 32 matching lines @@
 void WindowManagerApplication::InitWindowManager(
     ::mus::WindowTreeClient* window_tree_client) {
   window_manager_->Init(window_tree_client);
   window_manager_->AddRootWindowsObserver(this);
 }
 
 void WindowManagerApplication::Initialize(shell::Connector* connector,
                                           const shell::Identity& identity,
                                           uint32_t id) {
   connector_ = connector;
+  ::mus::GpuService::Initialize(connector);
   window_manager_.reset(new WindowManager(this, connector_));
 
   aura_init_.reset(new views::AuraInit(connector_, "ash_mus_resources.pak"));
 
   tracing_.Initialize(connector, identity.name());
 
   ::mus::WindowTreeClient* window_tree_client = new ::mus::WindowTreeClient(
       window_manager_.get(), window_manager_.get(), nullptr);
   window_tree_client->ConnectAsWindowManager(connector);
 
@@ skipping 89 matching lines @@
     RootWindowController* controller) {
   // TODO(msw): this isn't right, ownership should belong in WindowManager
   // and/or RootWindowController. But this is temporary until we get rid of
   // sysui.
   shelf_layout_.reset();
   user_window_controller_.reset();
 }
 
 }  // namespace mus
 }  // namespace ash