Revert of Roll WebRTC 8220:8272, Libjingle 8221:8270

Revert of Roll WebRTC 8220:8272, Libjingle 8221:8270 (patchset #1 id:1 of https://codereview.chromium.org/902183002/)

Reason for revert:
Suspected to cause the test failures on Mac:
http://build.chromium.org/p/chromium.mac/builders/Mac10.9%20Tests%20%28dbg%29/builds/2725

Original issue's description:
> Roll WebRTC 8220:8272, Libjingle 8221:8270
>
> WebRTC 8220:8272
> Changes: https://chromium.googlesource.com/external/webrtc/trunk/webrtc.git/+log/cfe4b49..0506804
>
> Libjingle 8221:8270
> Changes: https://chromium.googlesource.com/external/webrtc/trunk/talk.git/+log/18f533d..184c120
>
> TBR=magjed@chromium.org
>
> Committed: https://crrev.com/53b0c831ff6731665a6881fe380e8097402ccf0b
> Cr-Commit-Position: refs/heads/master@{#315066}

TBR=magjed@chromium.org,tommi@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/2b9502ed4157c361fbabcdaaa048f2e787db25c6
Cr-Commit-Position: refs/heads/master@{#315096}

[jiayl, 2015-02-06 20:24:28]

Created Revert of Roll WebRTC 8220:8272, Libjingle 8221:8270

[commit-bot: I haz the power, 2015-02-06 20:25:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/907513002/1

[commit-bot: I haz the power, 2015-02-06 20:26:04]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-06 20:26:47]

Patchset 1 (id:??) landed as
https://crrev.com/2b9502ed4157c361fbabcdaaa048f2e787db25c6
Cr-Commit-Position: refs/heads/master@{#315096}