Bug 1501455 - Remove gfx/vr/gfxVROculus.cpp and gfx/vr/gfxVROpenVR.cpp r=daoshengmu
Now that the VRService thread is enabled by default, we
can remove these old files.
The OpenVR 3rd party code has been moved from gfx/vr/openvr
to gfx/vr/service/openvr to be closer to the OpenVRSession
implementation.
The Oculus header (ovr_capi_dynamic.h) has been moved from
gfx/vr/ovr_capi_dynamic.h to gfx/vr/service/oculus to be
closer to the OculusSession implementation.
Differential Revision: https://phabricator.services.mozilla.com/D9600