tree a574425c8be7061bf043a66c7dc6b1a64e5bd2cc
parent e9d8fac87c988e6c5a1204f820c9ef0c410fb54b
author David James <davidjames@google.com> 1379716721 -0700
committer chrome-internal-fetch <chrome-internal-fetch@google.com> 1379904632 +0000

Add missing import for unittest.

Two changes went in at once: One that removed all usages of the unittest
module, and one that added a new usage. Since we don't run Chromite unit
tests on the CQ currently, both went in and we have broken unit tests.
Fix it.

BUG=chromium:280620
TEST=Run cbuildbot_stages_unittest.py and verify it works now.

Change-Id: I93405477413cdb3aef5a12d7e58d01dd666ee6d0
Reviewed-on: https://chromium-review.googlesource.com/170240
Tested-by: David James <davidjames@chromium.org>
Reviewed-by: Matt Tennant <mtennant@chromium.org>
Commit-Queue: David James <davidjames@chromium.org>