Use simulcast for screenshare only in conference mode

Use simulcast for screenshare only in conference mode

Also, don't crash if InitEncode fails for vp8.

BUG=chromium:705505
Review-Url: https://codereview.webrtc.org/2779163002
Cr-Commit-Position: refs/heads/master@{#17452}
Committed: https://chromium.googlesource.com/external/webrtc/+/fe627f30cbd3b4e0665237c7f309973cbf15e30b

[sprang_webrtc, 2017-03-28 21:22:23]

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

[commit-bot: I haz the power, 2017-03-28 21:22:32]

Dry run: 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, 2017-03-28 21:37:30]

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

[commit-bot: I haz the power, 2017-03-28 21:37:31]

Dry run: Try jobs failed on following builders:
  linux_ubsan on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/linux_ubsan/builds/11062)

[sprang_webrtc, 2017-03-29 08:13:35]

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

[commit-bot: I haz the power, 2017-03-29 08:13:40]

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

[sprang_webrtc, 2017-03-29 08:16:22]

sprang@webrtc.org changed reviewers:
+ stefan@webrtc.org

[commit-bot: I haz the power, 2017-03-29 08:35:45]

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

[commit-bot: I haz the power, 2017-03-29 08:35:45]

Dry run: This issue passed the CQ dry run.

[stefan-webrtc, 2017-03-29 15:09:39]

lgtm

[sprang_webrtc, 2017-03-29 15:21:37]

The CQ bit was checked by sprang@webrtc.org

[commit-bot: I haz the power, 2017-03-29 15:21:45]

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, 2017-03-29 15:25:01]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1490800897654090,
"parent_rev": "1b35bab8f83a5b722947ad819c178904e1dbb322", "commit_rev":
"fe627f30cbd3b4e0665237c7f309973cbf15e30b"}

[commit-bot: I haz the power, 2017-03-29 15:25:08]

Description was changed from

==========
Use simulcast for screenshare only in conference mode

Also, don't crash if InitEncode fails for vp8.

BUG=chromium:705505
==========

to

==========
Use simulcast for screenshare only in conference mode

Also, don't crash if InitEncode fails for vp8.

BUG=chromium:705505

Review-Url: https://codereview.webrtc.org/2779163002
Cr-Commit-Position: refs/heads/master@{#17452}
Committed:
https://chromium.googlesource.com/external/webrtc/+/fe627f30cbd3b4e0665237c7f...
==========

[commit-bot: I haz the power, 2017-03-29 15:25:09]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/external/webrtc/+/fe627f30cbd3b4e0665237c7f...