Delete old video defines in engine config and rename file

Delete old video defines in engine config.

This CL deletes the old and not used video defines in
engine_configurations.h and pre-pends voice_ to indicate there are only
voice/audio defines left in the file.

BUG=none
R=solenberg@webrtc.org

Committed: https://crrev.com/7056be937f040e8d794b6f733e1eb409a62dceef
Cr-Commit-Position: refs/heads/master@{#14558}

[mflodman, 2016-10-06 15:26:18]

mflodman@webrtc.org changed reviewers:
+ solenberg@webrtc.org

[mflodman, 2016-10-06 15:26:18]

Fredrik,
This CL removes a few defines that are not used  for video anymore. So the real
change to look at is really the rename of engine_configurations.h to
voice_engine_configurations.h.

[the sun, 2016-10-06 17:09:31]

lgtm

[mflodman, 2016-10-07 05:07:44]

Description was changed from

==========
Delete old video defines in engine config.

This CL deletes the old and not used video defines in
engine_configurations.h and pre-pends voice_ to indicate there are only
voice/audio defines left in the file.

BUG=none
==========

to

==========
Delete old video defines in engine config.

This CL deletes the old and not used video defines in
engine_configurations.h and pre-pends voice_ to indicate there are only
voice/audio defines left in the file.

BUG=none
R=solenberg@webrtc.org

Committed:
https://chromium.googlesource.com/external/webrtc/+/7056be937f040e8d794b6f733...
==========

[commit-bot: I haz the power, 2016-10-07 05:07:45]

Description was changed from

==========
Delete old video defines in engine config.

This CL deletes the old and not used video defines in
engine_configurations.h and pre-pends voice_ to indicate there are only
voice/audio defines left in the file.

BUG=none
R=solenberg@webrtc.org

Committed:
https://chromium.googlesource.com/external/webrtc/+/7056be937f040e8d794b6f733...
==========

to

==========
Delete old video defines in engine config.

This CL deletes the old and not used video defines in
engine_configurations.h and pre-pends voice_ to indicate there are only
voice/audio defines left in the file.

BUG=none
R=solenberg@webrtc.org

Committed: https://crrev.com/7056be937f040e8d794b6f733e1eb409a62dceef
Cr-Commit-Position: refs/heads/master@{#14558}
==========

[mflodman, 2016-10-07 05:07:45]

Committed patchset #2 (id:20001) manually as
7056be937f040e8d794b6f733e1eb409a62dceef (presubmit successful).

[commit-bot: I haz the power, 2016-10-07 05:07:46]

Patchset 2 (id:??) landed as
https://crrev.com/7056be937f040e8d794b6f733e1eb409a62dceef
Cr-Commit-Position: refs/heads/master@{#14558}