mus::GpuService: Support establish GpuChannel asynchronously.

ui/views/mus/views_mus_test_suite.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 "ui/views/mus/views_mus_test_suite.h"
 
 #include <memory>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/run_loop.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/simple_thread.h"
 #include "base/threading/thread.h"
+#include "components/mus/common/gpu_service.h"
 #include "components/mus/common/switches.h"
 #include "services/shell/background/background_shell.h"
 #include "services/shell/public/cpp/connector.h"
 #include "services/shell/public/cpp/shell_client.h"
 #include "services/shell/public/cpp/shell_connection.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/views/mus/window_manager_connection.h"
 #include "ui/views/test/platform_test_helper.h"
 #include "ui/views/views_delegate.h"
 
@@ skipping 12 matching lines @@
   ~DefaultShellClient() override {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DefaultShellClient);
 };
 
 class PlatformTestHelperMus : public PlatformTestHelper {
  public:
   PlatformTestHelperMus(shell::Connector* connector,
                         const shell::Identity& identity) {
+    mus::GpuService::Initialize(connector);
     // It is necessary to recreate the WindowManagerConnection for each test,
     // since a new MessageLoop is created for each test.
     connection_ = WindowManagerConnection::Create(connector, identity);
   }
-  ~PlatformTestHelperMus() override {}
+  ~PlatformTestHelperMus() override {
+    mus::GpuService::Terminate();
+  }
 
  private:
   std::unique_ptr<WindowManagerConnection> connection_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformTestHelperMus);
 };
 
 std::unique_ptr<PlatformTestHelper> CreatePlatformTestHelper(
     const shell::Identity& identity,
     const base::Callback<shell::Connector*(void)>& callback) {
@@ skipping 106 matching lines @@
   ViewsTestSuite::Initialize();
   shell_connections_.reset(new ShellConnection);
 }
 
 void ViewsMusTestSuite::Shutdown() {
   shell_connections_.reset();
   ViewsTestSuite::Shutdown();
 }
 
 }  // namespace views