Revert of Unify the macOS and iOS capturer implementations

Revert of Unify the macOS and iOS capturer implementations (patchset #4 id:60001 of https://codereview.webrtc.org/2309253005/ )

Reason for revert:
Breaks internal project

Original issue's description:
> Unify the macOS and iOS capturer implementations
>
> This removes the QTKit based capturer for mac, and removes the need
> to link against deprecated system libraries on macOS.
>
> BUG=webrtc:3968, webrtc:6275, webrtc:6333
>
> Committed: https://crrev.com/242d8bdddd77109781cbb70c59d161be7566ac98
> Cr-Commit-Position: refs/heads/master@{#14418}

TBR=magjed@webrtc.org,tkchin@webrtc.org,perkj@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:3968, webrtc:6275, webrtc:6333
Committed: https://crrev.com/eddb7571d81e51a66f4abaf55013c85b4132c837
Cr-Commit-Position: refs/heads/master@{#14429}

[kthelgason, 2016-09-29 09:42:53]

The CQ bit was checked by kthelgason@webrtc.org

[kthelgason, 2016-09-29 09:42:54]

Created Revert of Unify the macOS and iOS capturer implementations

[commit-bot: I haz the power, 2016-09-29 09:43:06]

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, 2016-09-29 09:43:27]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-29 09:43:29]

Description was changed from

==========
Revert of Unify the macOS and iOS capturer implementations (patchset #4 id:60001
of https://codereview.webrtc.org/2309253005/ )

Reason for revert:
Breaks internal project

Original issue's description:
> Unify the macOS and iOS capturer implementations
> 
> This removes the QTKit based capturer for mac, and removes the need
> to link against deprecated system libraries on macOS.
> 
> BUG=webrtc:3968,webrtc:6275,webrtc:6333
> 
> Committed: https://crrev.com/242d8bdddd77109781cbb70c59d161be7566ac98
> Cr-Commit-Position: refs/heads/master@{#14418}

TBR=magjed@webrtc.org,tkchin@webrtc.org,perkj@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:3968,webrtc:6275,webrtc:6333
==========

to

==========
Revert of Unify the macOS and iOS capturer implementations (patchset #4 id:60001
of https://codereview.webrtc.org/2309253005/ )

Reason for revert:
Breaks internal project

Original issue's description:
> Unify the macOS and iOS capturer implementations
>
> This removes the QTKit based capturer for mac, and removes the need
> to link against deprecated system libraries on macOS.
>
> BUG=webrtc:3968,webrtc:6275,webrtc:6333
>
> Committed: https://crrev.com/242d8bdddd77109781cbb70c59d161be7566ac98
> Cr-Commit-Position: refs/heads/master@{#14418}

TBR=magjed@webrtc.org,tkchin@webrtc.org,perkj@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:3968,webrtc:6275,webrtc:6333

Committed: https://crrev.com/eddb7571d81e51a66f4abaf55013c85b4132c837
Cr-Commit-Position: refs/heads/master@{#14429}
==========

[commit-bot: I haz the power, 2016-09-29 09:43:31]

Patchset 1 (id:??) landed as
https://crrev.com/eddb7571d81e51a66f4abaf55013c85b4132c837
Cr-Commit-Position: refs/heads/master@{#14429}

[kthelgason, 2016-09-29 09:44:32]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.webrtc.org/2375273004/ by kthelgason@webrtc.org.

The reason for reverting is: Internal project has been fixed.