Update comments for removal of MediaController.

Update comments for removal of MediaController.

Comment-only changes.

TBR=deadbeef@webrtc.org
BUG=webrtc:7135
Review-Url: https://codereview.webrtc.org/2869703002
Cr-Commit-Position: refs/heads/master@{#18045}
Committed: https://chromium.googlesource.com/external/webrtc/+/528b7931f8412d1d250efa4619a1177d5bd66fa3

[nisse-webrtc, 2017-05-08 09:47:46]

The CQ bit was checked by nisse@webrtc.org

[commit-bot: I haz the power, 2017-05-08 09:48:02]

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, 2017-05-08 10:21:44]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1494236866318600, "parent_rev":
"fc0acc44e6e6a12ddc28f0be9206d6b2cc5cc2ae", "commit_rev":
"528b7931f8412d1d250efa4619a1177d5bd66fa3"}

[commit-bot: I haz the power, 2017-05-08 10:21:49]

Description was changed from

==========
Update comments for removal of MediaController.

Comment-only changes.

TBR=deadbeef@webrtc.org
BUG=webrtc:7135
==========

to

==========
Update comments for removal of MediaController.

Comment-only changes.

TBR=deadbeef@webrtc.org
BUG=webrtc:7135

Review-Url: https://codereview.webrtc.org/2869703002
Cr-Commit-Position: refs/heads/master@{#18045}
Committed:
https://chromium.googlesource.com/external/webrtc/+/528b7931f8412d1d250efa461...
==========

[commit-bot: I haz the power, 2017-05-08 10:21:50]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/528b7931f8412d1d250efa461...