Enable test for git_rebase_update on Windows
Enable test for git_rebase_update on Windows

R=d05609f027dc667cc37492b1dc1bdea5d60fa82a@chromium.org

Change-Id: Ie801df1cef3d36fbfe6ba9fbd922bff4cf03a006
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2123867
Reviewed-by: Edward Lesmes <d05609f027dc667cc37492b1dc1bdea5d60fa82a@chromium.org>
Commit-Queue: Josip Sokcevic <4606aec58cba917397ff2e4738f995e4758694f8@google.com>

CoherentLabs/depot_tools,CoherentLabs/depot_tools