Log the dtls handshake error.

Log the dtls handshake error.

Add an uma counter to log how often dtls handshake fails because of incompatible cipher suites.
Related CL: https://codereview.webrtc.org/2167363002/

BUG=webrtc:5959
Committed: https://crrev.com/47d02c08e678e4b2f478896693d24c2a0e64163f
Cr-Commit-Position: refs/heads/master@{#415689}

[zhihuang1, 2016-08-30 19:08:03]

The CQ bit was checked by zhihuang@chromium.org to run a CQ dry run

[Zhi Huang, 2016-08-30 19:08:21]

The CQ bit was unchecked by zhihuang@webrtc.org

[zhihuang1, 2016-08-30 19:08:39]

The CQ bit was checked by zhihuang@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-08-30 19:09:28]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-30 21:33:51]

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

[commit-bot: I haz the power, 2016-08-30 21:33:51]

Dry run: This issue passed the CQ dry run.

[Zhi Huang, 2016-08-30 21:37:11]

zhihuang@webrtc.org changed reviewers:
+ holte@chromium.org, tommi@chromium.org, zhihuang@webrtc.org

[Zhi Huang, 2016-08-30 21:37:11]

Hi,
Please take a look on the changes.
Thanks.

[Steven Holte, 2016-08-30 22:12:06]

lgtm

[tommi (sloooow) - chröme, 2016-08-31 18:20:45]

The CQ bit was checked by tommi@chromium.org

[tommi (sloooow) - chröme, 2016-08-31 18:20:46]

lgtm

[commit-bot: I haz the power, 2016-08-31 18:21:30]

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

[commit-bot: I haz the power, 2016-08-31 18:35:07]

Description was changed from

==========
Log the dtls handshake error.

Add an uma counter to log how often dtls handshake fails because of incompatible
cipher suites.
Related CL: https://codereview.webrtc.org/2167363002/

BUG=webrtc:5959
==========

to

==========
Log the dtls handshake error.

Add an uma counter to log how often dtls handshake fails because of incompatible
cipher suites.
Related CL: https://codereview.webrtc.org/2167363002/

BUG=webrtc:5959

Committed: https://crrev.com/47d02c08e678e4b2f478896693d24c2a0e64163f
Cr-Commit-Position: refs/heads/master@{#415689}
==========

[commit-bot: I haz the power, 2016-08-31 18:35:08]

Patchset 1 (id:??) landed as
https://crrev.com/47d02c08e678e4b2f478896693d24c2a0e64163f
Cr-Commit-Position: refs/heads/master@{#415689}