GitLab

Right now emulated_position not updated by OpenXR. Send back space
tracking info back from xrLocateSpace using emulated_position.

Bug: 969131
Change-Id: I41bda233a9354f5885d2fb6c3af6ad087c4f68e4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1910559
Commit-Queue: Zheng Qin <zheqi@microsoft.com>
Reviewed-by: Alexander Cooper <alcooper@chromium.org>
Cr-Commit-Position: refs/heads/master@{#717757}