git_hyper_blame_test: Fix pylint issue.
git_hyper_blame_test: Fix pylint issue.

TBR=agable@chromium.org
Bug: 863669
Change-Id: Id641269f023acc1a89e83e9e5951e933eae93d40
Reviewed-on: https://chromium-review.googlesource.com/1145720
Reviewed-by: Edward Lesmes <d05609f027dc667cc37492b1dc1bdea5d60fa82a@chromium.org>
Commit-Queue: Edward Lesmes <d05609f027dc667cc37492b1dc1bdea5d60fa82a@chromium.org>

CoherentLabs/depot_tools,CoherentLabs/depot_tools