Reason for revert:
Breaks Linux memcheck bot.
https://bugs.chromium.org/p/webrtc/issues/detail?id=7973
Original issue's description:
> Make "set_ignore_non_default_routes" actually use its argument.
>
> It takes a bool argument, but unconditionally sets the flag to "true".
> Since no comment is left to offer an explanation, I'm assuming this was
> an accident.
>
> BUG=webrtc:7716
> TBR=pthatcher@webrtc.org
>
> Review-Url: https://codereview.webrtc.org/2974873002
> Cr-Commit-Position: refs/heads/master@{#18959}
> Committed: 05314c3252
TBR=pthatcher@webrtc.org,pthatcher@google.com,deadbeef@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7716
Review-Url: https://codereview.webrtc.org/2974193002
Cr-Commit-Position: refs/heads/master@{#18964}
Name: WebRTC URL: http://www.webrtc.org Version: 90 License: BSD License File: LICENSE Description: WebRTC provides real time voice and video processing functionality to enable the implementation of PeerConnection/MediaStream. Third party code used in this project is described in the file LICENSE_THIRD_PARTY.