merge_pr_19741

Split ref space reset test for immersive vs inline sessions

The immersive version of this test consistently passes, but the inline
version consistently times out on some bots, especially mac ones. Split
the test into separate files for the two session types so that we can
run the more important immersive test while we try to fix the inline
test (which is lower-priority).

Bug: 1013444
Change-Id: Ia0f021c8d1d482385218c4dfd66ee3d8cbc94c26
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1865677
Reviewed-by: Alexander Cooper alcooper@chromium.org
Commit-Queue: Jacob DeWitt jacde@chromium.org
Cr-Commit-Position: refs/heads/master@{#706704}