Adding more logging to BasicPortAllocator.

Adding more logging to BasicPortAllocator.

Logging when a candidate is gathered or the gathering state or a
Port changes. This will make it easier to identify problems related
to candidate gathering.

Committed: https://crrev.com/a64edb8f79de5997d0f475b8e580326c069abfa2
Cr-Commit-Position: refs/heads/master@{#13490}

[Taylor Brandstetter, 2016-07-07 21:59:52]

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

[pthatcher1, 2016-07-13 23:43:30]

lgtm

[honghaiz3, 2016-07-15 00:16:01]

lgtm

[Taylor Brandstetter, 2016-07-15 20:32:05]

The CQ bit was checked by deadbeef@webrtc.org

[commit-bot: I haz the power, 2016-07-15 20:32:14]

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, 2016-07-15 21:42:27]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-15 21:42:35]

Description was changed from

==========
Adding more logging to BasicPortAllocator.

Logging when a candidate is gathered or the gathering state or a
Port changes. This will make it easier to identify problems related
to candidate gathering.
==========

to

==========
Adding more logging to BasicPortAllocator.

Logging when a candidate is gathered or the gathering state or a
Port changes. This will make it easier to identify problems related
to candidate gathering.

Committed: https://crrev.com/a64edb8f79de5997d0f475b8e580326c069abfa2
Cr-Commit-Position: refs/heads/master@{#13490}
==========

[commit-bot: I haz the power, 2016-07-15 21:42:36]

Patchset 1 (id:??) landed as
https://crrev.com/a64edb8f79de5997d0f475b8e580326c069abfa2
Cr-Commit-Position: refs/heads/master@{#13490}