SIBackingOzone - Add Concurrent R/W support

This CL adds concurrent read/write support usage to
SharedImageBackingOzone. Prior to this, SharedImageBackingGLImage
would be used for concurrent read/writes.

latency test passing using gpu-fyi-try-chromeos-amd64-generic bot

Test: Test for pixel_skia_gold_validating tests containing Canvas Low
Bug: 1241537, 1310018
Change-Id: If2ea62caa020d9fe7c863e159268ac4e908a0852
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3653087
Reviewed-by: Vasiliy Telezhnikov <vasilyt@chromium.org>
Commit-Queue: Saifuddin Hitawala <hitawala@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1019225}