Clean up WebVR RequestPresent and make callback asynchronous.

device/vr/test/fake_vr_device.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 "device/vr/test/fake_vr_device.h"
 
 namespace device {
 
 FakeVRDevice::FakeVRDevice() {
   device_ = mojom::VRDisplayInfo::New();
@@ skipping 52 matching lines @@
   return display.Clone();
 }
 
 mojom::VRPosePtr FakeVRDevice::GetPose() {
   return pose_.Clone();
 }
 
 void FakeVRDevice::ResetPose() {}
 
 // TODO(shaobo.yan@intel.com): Will implemenate for VRDeviceServiceImpl tests.
-bool FakeVRDevice::RequestPresent(bool secure_origin) {
-  return true;
+void FakeVRDevice::RequestPresent(const base::Callback<void(bool)>& callback) {
+  callback.Run(true);
 }
 
+void FakeVRDevice::SetSecureOrigin(bool secure_origin) {}
+
 void FakeVRDevice::ExitPresent() {}
 
 void FakeVRDevice::SubmitFrame(mojom::VRPosePtr pose) {}
 
 void FakeVRDevice::UpdateLayerBounds(mojom::VRLayerBoundsPtr leftBounds,
                                      mojom::VRLayerBoundsPtr rightBounds) {}
 
 void FakeVRDevice::AddService(VRServiceImpl* service) {}
 
 void FakeVRDevice::RemoveService(VRServiceImpl* service) {}
 
 }  // namespace device