GitLab

Rename two test classes that currently have "OpenVR" in its name. These
classes do not have OpenVR specific implementations and can be
generalized to support other runtimes.

- OpenVRTestHook -> VRTestHook. The file is also moved from
/device/vr/openvr/test to /device/vr/test.
- MockOpenVRDeviceHookBase -> MockVRDeviceHookBase

Change-Id: I7b8ecad096e7c787d39a59fd7308fc25fdc904db
Reviewed-on: https://chromium-review.googlesource.com/c/1479813
Commit-Queue: Patrick To <patrto@microsoft.com>
Reviewed-by: Bill Orr <billorr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636572}