DataChannelInterface default impl of [messages/bytes]_[sent/received].

DataChannelInterface default impl of [messages/bytes]_[sent/received].

The default implementations are provided as to not break Chromium mocks,
as soon as we have done a successful roll they should be updated and the
default implementations removed.

TBR=hta@webrtc.org, deadbeef@webrtc.org
NOTRY=True
BUG=chromium:654927
Committed: https://crrev.com/75c8fb4b2c138b99f6bb7ffa6e2f415594116eed
Cr-Commit-Position: refs/heads/master@{#14617}

[hbos, 2016-10-12 21:38:13]

The CQ bit was checked by hbos@webrtc.org

[commit-bot: I haz the power, 2016-10-12 21:38:21]

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, 2016-10-12 21:48:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-12 21:48:28]

Description was changed from

==========
DataChannelInterface default impl of [messages/bytes]_[sent/received].

The default implementations are provided as to not break Chromium mocks,
as soon as we have done a successful roll they should be updated and the
default implementations removed.

TBR=hta@webrtc.org, deadbeef@webrtc.org
NOTRY=True
BUG=chromium:654927
==========

to

==========
DataChannelInterface default impl of [messages/bytes]_[sent/received].

The default implementations are provided as to not break Chromium mocks,
as soon as we have done a successful roll they should be updated and the
default implementations removed.

TBR=hta@webrtc.org, deadbeef@webrtc.org
NOTRY=True
BUG=chromium:654927

Committed: https://crrev.com/75c8fb4b2c138b99f6bb7ffa6e2f415594116eed
Cr-Commit-Position: refs/heads/master@{#14617}
==========

[commit-bot: I haz the power, 2016-10-12 21:48:29]

Patchset 1 (id:??) landed as
https://crrev.com/75c8fb4b2c138b99f6bb7ffa6e2f415594116eed
Cr-Commit-Position: refs/heads/master@{#14617}