Followup for git cl set-commit tests.
Followup for git cl set-commit tests.

Based on review of https://codereview.chromium.org/1889483002.

R=sergiyb@chromium.org
BUG=599931

Review URL: https://codereview.chromium.org/1885963002

git-svn-id: fd409f4bdeea2bb50a5d34bb4d4bfc2046a5a3dd@299905 0039d316-1c4b-4281-b951-d872f2087c98

CoherentLabs/depot_tools,primiano/depot_tools,primiano/depot_tools,CoherentLabs/depot_tools,primiano/depot_tools