GitLab

Renaming OpenXR location related variables/functions so their meanning
is more clear

Change-Id: I760b143b9f4d4a498741278b507b9608bca51b6c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1820022Reviewed-by: Alexander Cooper <alcooper@chromium.org>
Commit-Queue: Zheng Qin <zheqi@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#700000}