GitLab

This CL adds a gpu pixel test for off-thread paint worklet, which
contains basic draw and transform operations. This test serves
as preventing regression before shipping off-thread paint worklet,
it also ensures that we would get consistent results cross platforms.

Bug: 829967
Change-Id: I0597213905630b84391157b134982a19b2215cc9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1992311Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Xida Chen <xidachen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#729873}