Fix error logging for EndConnection.

Fix error logging for EndConnection.

EndConnection reasons were being passed to net::ErrorToString, which in
debug builds will DCHECK if the error is not recognized.

BUG=599711
Committed: https://crrev.com/401ae9f2cb2294bd18cd2baf2087a38910d3dff8
Cr-Commit-Position: refs/heads/master@{#396902}

[Wez, 2016-05-28 02:51:59]

wez@chromium.org changed reviewers:
+ kmarshall@chromium.org

[Wez, 2016-05-28 02:52:00]

PTAL

[Kevin M, 2016-05-31 18:27:48]

lgtm

[Wez, 2016-05-31 18:43:01]

The CQ bit was checked by wez@chromium.org

[commit-bot: I haz the power, 2016-05-31 18:43:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2023623002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2023623002/1

[commit-bot: I haz the power, 2016-05-31 19:49:09]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-31 20:44:46]

Description was changed from

==========
Fix error logging for EndConnection.

EndConnection reasons were being passed to net::ErrorToString, which in
debug builds will DCHECK if the error is not recognized.

BUG=599711
==========

to

==========
Fix error logging for EndConnection.

EndConnection reasons were being passed to net::ErrorToString, which in
debug builds will DCHECK if the error is not recognized.

BUG=599711

Committed: https://crrev.com/401ae9f2cb2294bd18cd2baf2087a38910d3dff8
Cr-Commit-Position: refs/heads/master@{#396902}
==========

[commit-bot: I haz the power, 2016-05-31 20:44:47]

Patchset 1 (id:??) landed as
https://crrev.com/401ae9f2cb2294bd18cd2baf2087a38910d3dff8
Cr-Commit-Position: refs/heads/master@{#396902}