Context is in the internal chrome-infra thread here:
https://groups.google.com/a/google.com/d/msg/chrome-infra/dNQGjNoP-Dg/XDymPAwOCXkJ

NOPRESUBMIT=true

BUG=chromium:480453

Review URL: https://codereview.chromium.org/1194063003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@295800 0039d316-1c4b-4281-b951-d872f2087c98