MB: Cleanup no-longer-used GN configurations

MB: Cleanup no-longer-used GN configurations

These were used in the transition from GN->GYP.

NOTRY=True
BUG=webrtc:5949
Committed: https://crrev.com/dedc822830f9013927afb9bf36acd03d2fc859cf
Cr-Commit-Position: refs/heads/master@{#14087}

[kjellander_webrtc, 2016-09-06 09:23:52]

kjellander@webrtc.org changed reviewers:
+ ehmaldonado@webrtc.org

[ehmaldonado_webrtc, 2016-09-06 09:28:37]

On 2016/09/06 09:23:52, kjellander_webrtc wrote:

lgtm

[kjellander_webrtc, 2016-09-06 09:30:57]

The CQ bit was checked by kjellander@webrtc.org

[commit-bot: I haz the power, 2016-09-06 09:31:03]

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, 2016-09-06 09:32:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-06 09:32:41]

Description was changed from

==========
MB: Cleanup no-longer-used GN configurations

These were used in the transition from GN->GYP.

NOTRY=True
BUG=webrtc:5949
==========

to

==========
MB: Cleanup no-longer-used GN configurations

These were used in the transition from GN->GYP.

NOTRY=True
BUG=webrtc:5949

Committed: https://crrev.com/dedc822830f9013927afb9bf36acd03d2fc859cf
Cr-Commit-Position: refs/heads/master@{#14087}
==========

[commit-bot: I haz the power, 2016-09-06 09:32:42]

Patchset 1 (id:??) landed as
https://crrev.com/dedc822830f9013927afb9bf36acd03d2fc859cf
Cr-Commit-Position: refs/heads/master@{#14087}