Don't re-determine ICE role on an ICE restart.

Don't re-determine ICE role on an ICE restart.

This only causes an increased likelihood of role conflicts as each peer
is picking a new role. It also means that if ICE is restarted for only
one media stream, roles can be different across media streams (which isn't
even allowed).

For more explanation of why this is unnecessary and should be changed,
see this discussion:
https://mailarchive.ietf.org/arch/msg/ice/C0_QRCTNcwtvUF12y28jQicPR10

Committed: https://crrev.com/73fbcf9237b1109283ef590b24188b1d64144358
Cr-Commit-Position: refs/heads/master@{#13077}

[Taylor Brandstetter, 2016-06-07 23:28:37]

deadbeef@webrtc.org changed reviewers:
+ honghaiz@webrtc.org, pthatcher@webrtc.org

[pthatcher1, 2016-06-08 19:21:16]

lgtm

That was quick.

[Taylor Brandstetter, 2016-06-08 19:37:47]

The CQ bit was checked by deadbeef@webrtc.org

[commit-bot: I haz the power, 2016-06-08 19:37:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2046123003/1

[commit-bot: I haz the power, 2016-06-08 20:13:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-08 20:13:14]

Description was changed from

==========
Don't re-determine ICE role on an ICE restart.

This only causes an increased likelihood of role conflicts as each peer
is picking a new role. It also means that if ICE is restarted for only
one media stream, roles can be different across media streams (which isn't
even allowed).

For more explanation of why this is unnecessary and should be changed,
see this discussion:
https://mailarchive.ietf.org/arch/msg/ice/C0_QRCTNcwtvUF12y28jQicPR10
==========

to

==========
Don't re-determine ICE role on an ICE restart.

This only causes an increased likelihood of role conflicts as each peer
is picking a new role. It also means that if ICE is restarted for only
one media stream, roles can be different across media streams (which isn't
even allowed).

For more explanation of why this is unnecessary and should be changed,
see this discussion:
https://mailarchive.ietf.org/arch/msg/ice/C0_QRCTNcwtvUF12y28jQicPR10

Committed: https://crrev.com/73fbcf9237b1109283ef590b24188b1d64144358
Cr-Commit-Position: refs/heads/master@{#13077}
==========

[commit-bot: I haz the power, 2016-06-08 20:13:15]

Patchset 1 (id:??) landed as
https://crrev.com/73fbcf9237b1109283ef590b24188b1d64144358
Cr-Commit-Position: refs/heads/master@{#13077}