mus::GpuService: Support establish GpuChannel asynchronously.

mash/quick_launch/quick_launch_application.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/quick_launch/quick_launch_application.h"
 
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "components/mus/common/gpu_service.h"
 #include "mash/public/interfaces/launchable.mojom.h"
 #include "mojo/public/c/system/main.h"
 #include "services/catalog/public/interfaces/catalog.mojom.h"
 #include "services/shell/public/cpp/application_runner.h"
 #include "services/shell/public/cpp/connector.h"
 #include "services/shell/public/cpp/shell_client.h"
 #include "services/tracing/public/cpp/tracing_impl.h"
 #include "ui/views/background.h"
 #include "ui/views/controls/textfield/textfield.h"
 #include "ui/views/controls/textfield/textfield_controller.h"
@@ skipping 138 matching lines @@
   DCHECK(it != windows_.end());
   windows_.erase(it);
   if (windows_.empty())
     base::MessageLoop::current()->QuitWhenIdle();
 }
 
 void QuickLaunchApplication::Initialize(shell::Connector* connector,
                                         const shell::Identity& identity,
                                         uint32_t id) {
   connector_ = connector;
+  mus::GpuService::Initialize(connector);
   tracing_.Initialize(connector, identity.name());
 
   aura_init_.reset(new views::AuraInit(connector, "views_mus_resources.pak"));
   window_manager_connection_ =
       views::WindowManagerConnection::Create(connector, identity);
 
   Launch(mojom::kWindow, mojom::LaunchMode::MAKE_NEW);
 }
 
 bool QuickLaunchApplication::AcceptConnection(shell::Connection* connection) {
@@ skipping 18 matching lines @@
   windows_.push_back(window);
 }
 
 void QuickLaunchApplication::Create(shell::Connection* connection,
                                     mojom::LaunchableRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 
 }  // namespace quick_launch
 }  // namespace mash