It doesn't work when '--' is not part of the command line.
It executed "gtest-parallel gtest-parallel-wrapper.py executable_name"
instead of "gtets-parallel executable_name".
NOTRY=True
TBR=kjellander@webrtc.org
BUG=None
Review-Url: https://codereview.webrtc.org/2982133002
Cr-Commit-Position: refs/heads/master@{#19077}