GitLab

This CL creates a new virtual test suite for Off-thread PaintWorklet,
the specific flag that is enabled is OffMainThreadCSSPaint.

Bug: 953271
Change-Id: Ibc73102d1f6193d0b1dade53dfbae2270d9aa04d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1568951Reviewed-by: Stephen McGruer <smcgruer@chromium.org>
Commit-Queue: Xida Chen <xidachen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#654842}