Bug: 772843
Change-Id: I994f829cba7577e6b628d36d894f4c5d1f3c429c
Reviewed-on: https://chromium-review.googlesource.com/708656
Commit-Queue: Paweł Hajdan Jr. <phajdan.jr@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
It is inspired by src/tools/roll_swarming_client.py but generalized.
R=dpranke@chromium.org, stip@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1147033003
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@295386 0039d316-1c4b-4281-b951-d872f2087c98