R=hinoka@chromium.org, maruel@chromium.org, stip@chromium.org
BUG=513567,475230

Review URL: https://codereview.chromium.org/1260913002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@296138 0039d316-1c4b-4281-b951-d872f2087c98