presubmit:gerrit_host/folder/to/repo:path/to/file/:CheckName
Example
presubmit:chromium-review.googlesource.com/chromium/src/:services/viz/

Bug: 1112667
Change-Id: I095a2c04e73c64d67fa1bb3dbf7e6dfd1d93fe26
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2335873Reviewed-by: Nodir Turakulov <nodir@chromium.org>
Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>
Commit-Queue: Saagar Sanghavi <saagarsanghavi@google.com>