Fixing issue where description contains empty ICE ufrag/pwd.

Fixing issue where description contains empty ICE ufrag/pwd.

The issue occurred when deserializing and then serializing a rejected
content description, which doesn't have the ICE ufrag/pwd in the first
place.

BUG=webrtc:5105
Committed: https://crrev.com/3f7219be700df3fea85193e8d541e7f90a1c3ce6
Cr-Commit-Position: refs/heads/master@{#11134}

[Taylor Brandstetter, 2015-12-18 23:51:56]

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

[pthatcher1, 2015-12-22 23:17:17]

lgtm

[Taylor Brandstetter, 2015-12-28 20:42:10]

The CQ bit was checked by deadbeef@webrtc.org

[commit-bot: I haz the power, 2015-12-28 20:42:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1534363002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1534363002/1

[commit-bot: I haz the power, 2015-12-28 20:56:31]

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

[commit-bot: I haz the power, 2015-12-28 20:56:32]

Exceeded global retry quota

[Taylor Brandstetter, 2015-12-28 23:15:23]

The CQ bit was checked by deadbeef@webrtc.org

[commit-bot: I haz the power, 2015-12-28 23:15:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1534363002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1534363002/1

[commit-bot: I haz the power, 2015-12-28 23:17:17]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-28 23:17:26]

Description was changed from

==========
Fixing issue where description contains empty ICE ufrag/pwd.

The issue occurred when deserializing and then serializing a rejected
content description, which doesn't have the ICE ufrag/pwd in the first
place.

BUG=webrtc:5105
==========

to

==========
Fixing issue where description contains empty ICE ufrag/pwd.

The issue occurred when deserializing and then serializing a rejected
content description, which doesn't have the ICE ufrag/pwd in the first
place.

BUG=webrtc:5105

Committed: https://crrev.com/3f7219be700df3fea85193e8d541e7f90a1c3ce6
Cr-Commit-Position: refs/heads/master@{#11134}
==========

[commit-bot: I haz the power, 2015-12-28 23:17:27]

Patchset 1 (id:??) landed as
https://crrev.com/3f7219be700df3fea85193e8d541e7f90a1c3ce6
Cr-Commit-Position: refs/heads/master@{#11134}