Reland of Fix flaky EndToEndTest.TransportSeqNumOnAudioAndVideo

Reland of Fix flaky EndToEndTest.TransportSeqNumOnAudioAndVideo (patchset #1 id:1 of https://codereview.webrtc.org/2730893002/ )

Reason for revert:
Fixing race and relanding 

Original issue's description:
> Revert of Fix flaky EndToEndTest.TransportSeqNumOnAudioAndVideo (patchset #2 id:20001 of https://codereview.webrtc.org/2728103002/ )
> 
> Reason for revert:
> Fails on tsan
> http://build.chromium.org/p/client.webrtc/builders/Linux%20Tsan%20v2/builds/10235
> 
> Original issue's description:
> > Fix flaky EndToEndTest.TransportSeqNumOnAudioAndVideo
> > Add extra checks to it to simplify diagnostic should it fail again.
> > 
> > BUG=webrtc:7292
> > 
> > Review-Url: https://codereview.webrtc.org/2728103002
> > Cr-Commit-Position: refs/heads/master@{#16999}
> > Committed: https://chromium.googlesource.com/external/webrtc/+/bcb6004a9d53615a6428e070cbc6d52a2d8e833b
> 
> TBR=asapersson@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:7292
> 
> Review-Url: https://codereview.webrtc.org/2730893002
> Cr-Commit-Position: refs/heads/master@{#17000}
> Committed: https://chromium.googlesource.com/external/webrtc/+/9a59473f2c403827a3560944c7ffe76d37ab77b9

TBR=asapersson@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7292
Review-Url: https://codereview.webrtc.org/2730673004
Cr-Commit-Position: refs/heads/master@{#17006}
Committed: https://chromium.googlesource.com/external/webrtc/+/4336d73bd3c8df53ec396e9600463c8e162e20b1

[danilchap, 2017-03-03 13:34:37]

Created Reland of Fix flaky EndToEndTest.TransportSeqNumOnAudioAndVideo

[danilchap, 2017-03-03 13:46:53]

This time checked locally with tsan too, ptal

[danilchap, 2017-03-03 13:47:07]

The CQ bit was checked by danilchap@webrtc.org to run a CQ dry run

[commit-bot: I haz the power, 2017-03-03 13:47:10]

Dry run: 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, 2017-03-03 13:47:13]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-03-03 13:47:14]

Dry run: This issue passed the CQ dry run.

[åsapersson, 2017-03-03 13:51:48]

lgtm

[danilchap, 2017-03-03 14:21:42]

The CQ bit was checked by danilchap@webrtc.org

[commit-bot: I haz the power, 2017-03-03 14:21:47]

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, 2017-03-03 14:21:55]

CQ is committing da patch.

Bot data: {"patchset_id": 60001, "attempt_start_ts": 1488550902562980,
"parent_rev": "65cb70d939af8f9b6b8b1af9109dd7385af79f0c", "commit_rev":
"4336d73bd3c8df53ec396e9600463c8e162e20b1"}

[commit-bot: I haz the power, 2017-03-03 14:21:59]

Description was changed from

==========
Reland of Fix flaky EndToEndTest.TransportSeqNumOnAudioAndVideo (patchset #1
id:1 of https://codereview.webrtc.org/2730893002/ )

Reason for revert:
Fixing race and relanding 

Original issue's description:
> Revert of Fix flaky EndToEndTest.TransportSeqNumOnAudioAndVideo (patchset #2
id:20001 of https://codereview.webrtc.org/2728103002/ )
> 
> Reason for revert:
> Fails on tsan
>
http://build.chromium.org/p/client.webrtc/builders/Linux%20Tsan%20v2/builds/1...
> 
> Original issue's description:
> > Fix flaky EndToEndTest.TransportSeqNumOnAudioAndVideo
> > Add extra checks to it to simplify diagnostic should it fail again.
> > 
> > BUG=webrtc:7292
> > 
> > Review-Url: https://codereview.webrtc.org/2728103002
> > Cr-Commit-Position: refs/heads/master@{#16999}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/bcb6004a9d53615a6428e070c...
> 
> TBR=asapersson@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:7292
> 
> Review-Url: https://codereview.webrtc.org/2730893002
> Cr-Commit-Position: refs/heads/master@{#17000}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/9a59473f2c403827a3560944c...

TBR=asapersson@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7292
==========

to

==========
Reland of Fix flaky EndToEndTest.TransportSeqNumOnAudioAndVideo (patchset #1
id:1 of https://codereview.webrtc.org/2730893002/ )

Reason for revert:
Fixing race and relanding 

Original issue's description:
> Revert of Fix flaky EndToEndTest.TransportSeqNumOnAudioAndVideo (patchset #2
id:20001 of https://codereview.webrtc.org/2728103002/ )
> 
> Reason for revert:
> Fails on tsan
>
http://build.chromium.org/p/client.webrtc/builders/Linux%20Tsan%20v2/builds/1...
> 
> Original issue's description:
> > Fix flaky EndToEndTest.TransportSeqNumOnAudioAndVideo
> > Add extra checks to it to simplify diagnostic should it fail again.
> > 
> > BUG=webrtc:7292
> > 
> > Review-Url: https://codereview.webrtc.org/2728103002
> > Cr-Commit-Position: refs/heads/master@{#16999}
> > Committed:
https://chromium.googlesource.com/external/webrtc/+/bcb6004a9d53615a6428e070c...
> 
> TBR=asapersson@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:7292
> 
> Review-Url: https://codereview.webrtc.org/2730893002
> Cr-Commit-Position: refs/heads/master@{#17000}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/9a59473f2c403827a3560944c...

TBR=asapersson@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7292

Review-Url: https://codereview.webrtc.org/2730673004
Cr-Commit-Position: refs/heads/master@{#17006}
Committed:
https://chromium.googlesource.com/external/webrtc/+/4336d73bd3c8df53ec396e960...
==========

[commit-bot: I haz the power, 2017-03-03 14:22:00]

Committed patchset #3 (id:60001) as
https://chromium.googlesource.com/external/webrtc/+/4336d73bd3c8df53ec396e960...