GitLab

The histogram records the wall time for each GPU task. This will
eventually be used to add a slow report trigger to capture traces for
long running tasks from canary.

Bug: 1064662
Change-Id: I30ec4a7f583fc197f916a55eae7dd3b1fbf57bf4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2144340Reviewed-by: Etienne Bergeron <etienneb@chromium.org>
Reviewed-by: Jesse Doherty <jwd@chromium.org>
Reviewed-by: Sunny Sachanandani <sunnyps@chromium.org>
Commit-Queue: kylechar <kylechar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#759239}