Add code of conduct to WebRTC repo

Add code of conduct to WebRTC repo

BUG=NONE

Review-Url: https://codereview.webrtc.org/2854033002
Cr-Commit-Position: refs/heads/master@{#18161}
Committed: https://chromium.googlesource.com/external/webrtc/+/b3b2a8f42467886c7874fd0766e824b1c6632a87

[daniela-webrtc, 2017-05-02 10:25:08]

denicija@webrtc.org changed reviewers:
+ mflodman@webrtc.org, tina.legrand@webrtc.org, tommi@webrtc.org

[daniela-webrtc, 2017-05-02 10:25:09]

Please take a look when you have a chance.

[tommi, 2017-05-02 14:30:06]

lgtm

[mflodman, 2017-05-11 08:19:37]

lgtm

[daniela-webrtc, 2017-05-16 11:49:34]

The CQ bit was checked by denicija@webrtc.org

[commit-bot: I haz the power, 2017-05-16 11:49:44]

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, 2017-05-16 12:09:14]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1494935374550540, "parent_rev":
"e4bcd6d02aebdf61589b7e63985c984d20a84011", "commit_rev":
"b3b2a8f42467886c7874fd0766e824b1c6632a87"}

[commit-bot: I haz the power, 2017-05-16 12:09:19]

Description was changed from

==========
Add code of conduct to WebRTC repo

BUG=NONE
==========

to

==========
Add code of conduct to WebRTC repo

BUG=NONE

Review-Url: https://codereview.webrtc.org/2854033002
Cr-Commit-Position: refs/heads/master@{#18161}
Committed:
https://chromium.googlesource.com/external/webrtc/+/b3b2a8f42467886c7874fd076...
==========

[commit-bot: I haz the power, 2017-05-16 12:09:20]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/b3b2a8f42467886c7874fd076...