autotest: Signature of PossibleBrowser.Create() is changing.

This CL handles the situation before and after the change.

BUG=chromium:428967
TEST=login_LoginSuccess, before and after the patch

Change-Id: Iea4b274ef2559fd76481ed3ed3a05ce4cfed1941
Reviewed-on: https://chromium-review.googlesource.com/226815
Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Tested-by: Achuith Bhandarkar <achuith@chromium.org>
Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
1 file changed