Added support for OpenVR controllers

device/vr/openvr/openvr_device.h

Index: device/vr/openvr/openvr_device.h
diff --git a/device/vr/openvr/openvr_device.h b/device/vr/openvr/openvr_device.h
index 136f5667fd226c7e650e489d3e7491d0fbee37cc..7bc96f90b982421daeb388aad3f6c11b1f5b6c10 100644
--- a/device/vr/openvr/openvr_device.h
+++ b/device/vr/openvr/openvr_device.h
@@ -18,7 +18,7 @@ namespace device {
 
 class OpenVRDevice : public VRDevice {
  public:
-  OpenVRDevice();
+  OpenVRDevice(vr::IVRSystem* vr);
   ~OpenVRDevice() override;
 
   // VRDevice
@@ -68,6 +68,8 @@ class OpenVRDevice : public VRDevice {
 
   mojom::VRSubmitFrameClientPtr submit_client_;
 
+  vr::IVRSystem* vr_system_;
+
   DISALLOW_COPY_AND_ASSIGN(OpenVRDevice);
 };