ACM CodecOwner: Test that we reset speech encoder when enabling CNG or RED

ACM CodecOwner: Test that we reset speech encoder when enabling CNG or RED

If we don't, we'll end up crashing if they're enabled when the speech
encoder is in the middle of encoding a packet, since CNG and RED
assume that the speech encoder starts out with an empty buffer
(because they need to be in sync with it).

BUG=chromium:490368
Committed: https://crrev.com/39720f2669e34dbfb55fe3c6eb38e4331b231ae5
Cr-Commit-Position: refs/heads/master@{#9917}

[kwiberg-webrtc, 2015-09-10 11:32:38]

kwiberg@webrtc.org changed reviewers:
+ henrik.lundin@webrtc.org

[kwiberg-webrtc, 2015-09-10 11:35:10]

👀

[hlundin-webrtc, 2015-09-10 12:04:54]

lgtm

[kwiberg-webrtc, 2015-09-10 12:10:54]

The CQ bit was checked by kwiberg@webrtc.org

[commit-bot: I haz the power, 2015-09-10 12:11:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1331853002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1331853002/1

[commit-bot: I haz the power, 2015-09-10 12:44:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-10 12:45:02]

Patchset 1 (id:??) landed as
https://crrev.com/39720f2669e34dbfb55fe3c6eb38e4331b231ae5
Cr-Commit-Position: refs/heads/master@{#9917}