Ports VRService to be hosted in the device service.

services/device/device_service.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 "services/device/device_service.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "device/power_monitor/power_monitor_message_broadcaster.h"
 #include "device/time_zone_monitor/time_zone_monitor.h"
 #include "services/service_manager/public/cpp/connection.h"
 #include "services/service_manager/public/cpp/interface_registry.h"
 
+namespace {
+
+template <typename Interface>
+void IgnoreInterfaceRequest(mojo::InterfaceRequest<Interface> request) {
+  // Intentionally ignore the interface request.
+}
+
+}  // namespace
+
 namespace device {
 
 std::unique_ptr<service_manager::Service> CreateDeviceService(
     scoped_refptr<base::SingleThreadTaskRunner> file_task_runner) {
   return base::MakeUnique<DeviceService>(std::move(file_task_runner));
 }
 
 DeviceService::DeviceService(
     scoped_refptr<base::SingleThreadTaskRunner> file_task_runner)
     : file_task_runner_(std::move(file_task_runner)) {}
 
 DeviceService::~DeviceService() {}
 
 void DeviceService::OnStart() {}
 
 bool DeviceService::OnConnect(const service_manager::ServiceInfo& remote_info,
                               service_manager::InterfaceRegistry* registry) {
   registry->AddInterface<mojom::PowerMonitor>(this);
   registry->AddInterface<mojom::TimeZoneMonitor>(this);
+  registry->AddInterface<mojom::VRService>(this);
   return true;
 }
 
 void DeviceService::Create(const service_manager::Identity& remote_identity,
                            mojom::PowerMonitorRequest request) {
   PowerMonitorMessageBroadcaster::Create(std::move(request));
 }
 
 void DeviceService::Create(const service_manager::Identity& remote_identity,
                            mojom::TimeZoneMonitorRequest request) {
   if (!time_zone_monitor_)
     time_zone_monitor_ = device::TimeZoneMonitor::Create(file_task_runner_);
   time_zone_monitor_->Bind(std::move(request));
 }
 
+void DeviceService::Create(const service_manager::Identity& remote_identity,
+                           mojom::VRServiceRequest request) {
+#if defined(ENABLE_WEBVR)
+  device::VRServiceImpl::Create(std::move(request));
+#else
+  IgnoreInterfaceRequest<mojom::VRService>(std::move(request));
+#endif
+}
+
 }  // namespace device