Fixed UKM API docs to match the current API.

Change-Id: If0cb49393d3c04414687d16427a50d591cf216d1
Reviewed-on: https://chromium-review.googlesource.com/c/1349152
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Reviewed-by: Jesse Doherty <jwd@chromium.org>
Commit-Queue: Matt Giuca <mgiuca@chromium.org>
Cr-Commit-Position: refs/heads/master@{#614543}
1 file changed