Implement WebVR presentation pausing for VR Shell Menu Mode

device/vr/test/fake_vr_device.h

Index: device/vr/test/fake_vr_device.h
diff --git a/device/vr/test/fake_vr_device.h b/device/vr/test/fake_vr_device.h
index 8b3d31ddb13f26f66f45aac1e1bb690b3f0867b0..e7a3647fcc44602ac49d8d4d8049a2d37b031a58 100644
--- a/device/vr/test/fake_vr_device.h
+++ b/device/vr/test/fake_vr_device.h
@@ -6,6 +6,7 @@
 #define DEVICE_VR_TEST_FAKE_VR_DEVICE_H_
 
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
 #include "device/vr/vr_device.h"
 #include "device/vr/vr_device_provider.h"
 
@@ -13,7 +14,7 @@ namespace device {
 
 class FakeVRDevice : public VRDevice {
  public:
-  explicit FakeVRDevice(VRDeviceProvider* provider);
+  explicit FakeVRDevice(scoped_refptr<VRDeviceProvider> provider);
   ~FakeVRDevice() override;
 
   void InitBasicDevice();