Rename RTCOutboundRTPStreamStats *_rtt members to *_round_trip_time.

Rename RTCOutboundRTPStreamStats *_rtt members to *_round_trip_time.

The spec renamed these recently:
https://w3c.github.io/webrtc-stats/#since-21-sep-2016*

BUG=chromium:627816
Committed: https://crrev.com/3168c7a04b7b8c65d4871b9ed20d49b6fe95b524
Cr-Commit-Position: refs/heads/master@{#15630}

[hbos, 2016-12-15 10:41:21]

The CQ bit was checked by hbos@webrtc.org to run a CQ dry run

[commit-bot: I haz the power, 2016-12-15 10:41:28]

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

[hbos, 2016-12-15 10:41:40]

hbos@webrtc.org changed reviewers:
+ hta@webrtc.org

[hbos, 2016-12-15 10:41:41]

Please take a sta-- look, hta.

[hta-webrtc, 2016-12-15 10:50:05]

lgtm

[commit-bot: I haz the power, 2016-12-15 11:08:47]

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

[commit-bot: I haz the power, 2016-12-15 11:08:48]

Dry run: This issue passed the CQ dry run.

[hbos, 2016-12-15 14:15:41]

The CQ bit was checked by hbos@webrtc.org

[commit-bot: I haz the power, 2016-12-15 14:15:55]

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, 2016-12-15 14:17:08]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1481811341543910, "parent_rev":
"e69122175e1c96361b61c5b19d7bc462e8b8a025", "commit_rev":
"d00a44a0edc95feae8f8e0e892363bc29e57e526"}

[commit-bot: I haz the power, 2016-12-15 14:17:12]

Description was changed from

==========
Rename RTCOutboundRTPStreamStats *_rtt members to *_round_trip_time.

The spec renamed these recently:
https://w3c.github.io/webrtc-stats/#since-21-sep-2016*

BUG=chromium:627816
==========

to

==========
Rename RTCOutboundRTPStreamStats *_rtt members to *_round_trip_time.

The spec renamed these recently:
https://w3c.github.io/webrtc-stats/#since-21-sep-2016*

BUG=chromium:627816

Review-Url: https://codereview.webrtc.org/2576383002
==========

[commit-bot: I haz the power, 2016-12-15 14:17:13]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-15 14:17:18]

Description was changed from

==========
Rename RTCOutboundRTPStreamStats *_rtt members to *_round_trip_time.

The spec renamed these recently:
https://w3c.github.io/webrtc-stats/#since-21-sep-2016*

BUG=chromium:627816

Review-Url: https://codereview.webrtc.org/2576383002
==========

to

==========
Rename RTCOutboundRTPStreamStats *_rtt members to *_round_trip_time.

The spec renamed these recently:
https://w3c.github.io/webrtc-stats/#since-21-sep-2016*

BUG=chromium:627816

Committed: https://crrev.com/3168c7a04b7b8c65d4871b9ed20d49b6fe95b524
Cr-Commit-Position: refs/heads/master@{#15630}
==========

[commit-bot: I haz the power, 2016-12-15 14:17:19]

Patchset 1 (id:??) landed as
https://crrev.com/3168c7a04b7b8c65d4871b9ed20d49b6fe95b524
Cr-Commit-Position: refs/heads/master@{#15630}