Reason for revert:
The blocker in upstreaming has been removed.
Original issue's description:
> Revert of Reland "Add first part of the network_tester functionality" (patchset #3 id:40001 of https://codereview.chromium.org/2808203003/ )
>
> Reason for revert:
> Break downstream bots.
>
> Original issue's description:
> > Reland "Add first part of the network_tester functionality"
> >
> > BUG=webrtc:7426
> >
> > Review-Url: https://codereview.webrtc.org/2808203003
> > Cr-Commit-Position: refs/heads/master@{#17666}
> > Committed: 1c223b2f75
>
> TBR=stefan@webrtc.org,minyue@webrtc.org,nisse@webrtc.org,terelius@webrtc.org,michaelt@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:7426
>
> Review-Url: https://codereview.webrtc.org/2813193002
> Cr-Commit-Position: refs/heads/master@{#17672}
> Committed: e5fd38989dTBR=stefan@webrtc.org,nisse@webrtc.org,terelius@webrtc.org,michaelt@webrtc.org,philipel@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7426
Review-Url: https://codereview.webrtc.org/2811253005
Cr-Commit-Position: refs/heads/master@{#17688}
Reason for revert:
Break downstream bots.
Original issue's description:
> Reland "Add first part of the network_tester functionality"
>
> BUG=webrtc:7426
>
> Review-Url: https://codereview.webrtc.org/2808203003
> Cr-Commit-Position: refs/heads/master@{#17666}
> Committed: 1c223b2f75TBR=stefan@webrtc.org,minyue@webrtc.org,nisse@webrtc.org,terelius@webrtc.org,michaelt@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7426
Review-Url: https://codereview.webrtc.org/2813193002
Cr-Commit-Position: refs/heads/master@{#17672}
Reason for revert:
Tasn test failure.
Original issue's description:
> Add first part of the network_tester functionality.
>
> BUG=webrtc:7426
>
> Review-Url: https://codereview.webrtc.org/2779233002
> Cr-Commit-Position: refs/heads/master@{#17635}
> Committed: 333d0ff631TBR=stefan@webrtc.org,minyue@webrtc.org,nisse@webrtc.org,terelius@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7426
Review-Url: https://codereview.webrtc.org/2800403003
Cr-Commit-Position: refs/heads/master@{#17636}