GitLab

Passing device-specific options was getting messy in xr_system/
xr_session. Use a containing structure to simplify this, and to avoid
merge conflicts as in https://crrev.com/c/2438207 going forward.

Bug: 1135789
Change-Id: Ie26affa410a1fad8a8ff9cd6686de452d2393ee8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2440222Reviewed-by: Brandon Jones <bajones@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Klaus Weidner <klausw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816230}