Reland of land "Add first part of the network_tester functionality"

Reland of land "Add first part of the network_tester functionality" (patchset #1 id:1 of https://codereview.webrtc.org/2813193002/ )

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: https://chromium.googlesource.com/external/webrtc/+/1c223b2f7557ff449add7a114d72ea97614731b5
> 
> 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: https://chromium.googlesource.com/external/webrtc/+/e5fd38989de6900cd32e7c88932201ec3b3467d8

TBR=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}
Committed: https://chromium.googlesource.com/external/webrtc/+/cb067fa117afd9ef4e1e18daf97a7bdd35888a75

[minyue-webrtc, 2017-04-13 08:23:48]

The CQ bit was checked by minyue@webrtc.org

[minyue-webrtc, 2017-04-13 08:23:49]

Created Reland of land "Add first part of the network_tester functionality"

[commit-bot: I haz the power, 2017-04-13 08:23:58]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2017-04-13 08:24:03]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1492071828919500, "parent_rev":
"6f9b7b496aefb9738093ae9a5c9632d2bc2d82ae", "commit_rev":
"cb067fa117afd9ef4e1e18daf97a7bdd35888a75"}

[commit-bot: I haz the power, 2017-04-13 08:24:07]

Description was changed from

==========
Reland of land "Add first part of the network_tester functionality" (patchset #1
id:1 of https://codereview.webrtc.org/2813193002/ )

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:
https://chromium.googlesource.com/external/webrtc/+/1c223b2f7557ff449add7a114...
> 
>
TBR=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/2813193002
> Cr-Commit-Position: refs/heads/master@{#17672}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/e5fd38989de6900cd32e7c889...

TBR=stefan@webrtc.org,nisse@webrtc.org,terelius@webrtc.org,michaelt@webrtc.or...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7426
==========

to

==========
Reland of land "Add first part of the network_tester functionality" (patchset #1
id:1 of https://codereview.webrtc.org/2813193002/ )

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:
https://chromium.googlesource.com/external/webrtc/+/1c223b2f7557ff449add7a114...
> 
>
TBR=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/2813193002
> Cr-Commit-Position: refs/heads/master@{#17672}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/e5fd38989de6900cd32e7c889...

TBR=stefan@webrtc.org,nisse@webrtc.org,terelius@webrtc.org,michaelt@webrtc.or...
# 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}
Committed:
https://chromium.googlesource.com/external/webrtc/+/cb067fa117afd9ef4e1e18daf...
==========

[commit-bot: I haz the power, 2017-04-13 08:24:08]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/cb067fa117afd9ef4e1e18daf...

[minyue-webrtc, 2017-04-13 10:03:35]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.webrtc.org/2810423002/ by minyue@webrtc.org.

The reason for reverting is: Still break upstream..