
Supports outputting the closest image known to Gold and its diff with the produced image when running the GPU pixel tests locally. This should improve the usability of the tests when debugging locally, as before they only output the produced image and a link to all images known to Gold for the test. Bug: 1030349 Change-Id: I55cd724541f86edf8d6de534bd921d70d03d6eda Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1949727 Reviewed-by: Kenneth Russell <kbr@chromium.org> Commit-Queue: Brian Sheedy <bsheedy@chromium.org> Cr-Commit-Position: refs/heads/master@{#721626}