commit ed1e6db770f7f6a2986d27bc8ba083713e7107cc
author Patrick To <patrto@microsoft.com> Thu Jan 13 23:36:34 2022
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> Thu Jan 13 23:36:34 2022
tree 8a4713ce189a906d82bdee12075d66d2c010fb6e
parent a0bb5c06dc99ffe7cd2f633dc4988d24d1aa0ade

Reland "Add support for secondary views in WebXR"

This change adds support for requesting secondary views in WebXR.
Secondary views can be requested by passing in 'secondary-views'
to requestSession. With this enabled, an arbitrary number of
secondary views can be exposed from the XR runtime on each frame.

This change also implements secondary views in the OpenXR backend,
supporting the first-person observer view configuration. Secondary views
in OpenXR are only exposed to WebXR only when they are active (such as
when the camera feed is being captured) and requested by WebXR.

Change-Id: Ic02d1140ef1c07218c61fc7e6c8a8e6bb85c5b82
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3384272
Reviewed-by: Alexander Cooper <alcooper@chromium.org>
Reviewed-by: danakj chromium <danakj@chromium.org>
Commit-Queue: Patrick To <patrto@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#958914}