Add kainino@ as Chrome GPU testing co-owner.

Kai has made significant contributions to the test infrastructure and
should be a co-owner of the files.

Bug: none
Change-Id: I20aa18127fb7d066c69b3d1fcdceba4ecd646be6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1578070
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653058}
1 file changed