chromeos: turn on simplified display management for mash

chrome/browser/chromeos/dbus/mus_console_service_provider_delegate.cc

-// Copyright 2017 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/chromeos/dbus/mus_console_service_provider_delegate.h"
-
-#include "content/public/common/service_manager_connection.h"
-#include "services/service_manager/public/cpp/connector.h"
-
-namespace chromeos {
-
-MusConsoleServiceProviderDelegate::MusConsoleServiceProviderDelegate() {}
-
-MusConsoleServiceProviderDelegate::~MusConsoleServiceProviderDelegate() {}
-
-void MusConsoleServiceProviderDelegate::TakeDisplayOwnership(
-    const UpdateOwnershipCallback& callback) {
-  ConnectDisplayControllerIfNecessary();
-  display_controller_->TakeDisplayControl(callback);
-}
-
-void MusConsoleServiceProviderDelegate::ReleaseDisplayOwnership(
-    const UpdateOwnershipCallback& callback) {
-  ConnectDisplayControllerIfNecessary();
-  display_controller_->RelinquishDisplayControl(callback);
-}
-
-void MusConsoleServiceProviderDelegate::ConnectDisplayControllerIfNecessary() {
-  if (display_controller_)
-    return;
-
-  content::ServiceManagerConnection::GetForProcess()
-      ->GetConnector()
-      ->BindInterface("ui", &display_controller_);
-}
-
-}  // namespace chromeos