Revert of Use std::unique_ptr<> to pass frame ownership in DesktopCapturer impls.

Revert of Use std::unique_ptr<> to pass frame ownership in DesktopCapturer impls. (patchset #7 id:140001 of https://codereview.webrtc.org/1988783003/ )

Reason for revert:
Broke chromium builder

Original issue's description:
> Use std::unique_ptr<> to pass frame ownership in DesktopCapturer impls.
>
> Previously raw pointers were used for owned DesktopFrame instances.
> Updated all screen and window capturer implementations to use
> std::unique_ptr<>.
>
> Also includes some other cleanups in the capturers:
>  - s/NULL/nullptr
>  - moved default initializers to class definition.
>
> BUG=webrtc:5950
>
> Committed: https://crrev.com/4a627a8c13554d12412cabb8f751caee6e61ee32
> Cr-Commit-Position: refs/heads/master@{#13032}

TBR=wez@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5950
Committed: https://crrev.com/b4c7b8365d9ed11099b4c5bdcc4eeab33923cd9c
Cr-Commit-Position: refs/heads/master@{#13033}

[Sergey Ulanov, 2016-06-03 12:56:30]

The CQ bit was checked by sergeyu@chromium.org

[Sergey Ulanov, 2016-06-03 12:56:30]

Created Revert of Use std::unique_ptr<> to pass frame ownership in
DesktopCapturer impls.

[commit-bot: I haz the power, 2016-06-03 12:56:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2030333003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2030333003/1

[commit-bot: I haz the power, 2016-06-03 12:56:47]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-03 12:56:51]

Description was changed from

==========
Revert of Use std::unique_ptr<> to pass frame ownership in DesktopCapturer
impls. (patchset #7 id:140001 of https://codereview.webrtc.org/1988783003/ )

Reason for revert:
Broke chromium builder

Original issue's description:
> Use std::unique_ptr<> to pass frame ownership in DesktopCapturer impls.
> 
> Previously raw pointers were used for owned DesktopFrame instances.
> Updated all screen and window capturer implementations to use
> std::unique_ptr<>.
> 
> Also includes some other cleanups in the capturers:
>  - s/NULL/nullptr
>  - moved default initializers to class definition.
> 
> BUG=webrtc:5950
> 
> Committed: https://crrev.com/4a627a8c13554d12412cabb8f751caee6e61ee32
> Cr-Commit-Position: refs/heads/master@{#13032}

TBR=wez@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5950
==========

to

==========
Revert of Use std::unique_ptr<> to pass frame ownership in DesktopCapturer
impls. (patchset #7 id:140001 of https://codereview.webrtc.org/1988783003/ )

Reason for revert:
Broke chromium builder

Original issue's description:
> Use std::unique_ptr<> to pass frame ownership in DesktopCapturer impls.
>
> Previously raw pointers were used for owned DesktopFrame instances.
> Updated all screen and window capturer implementations to use
> std::unique_ptr<>.
>
> Also includes some other cleanups in the capturers:
>  - s/NULL/nullptr
>  - moved default initializers to class definition.
>
> BUG=webrtc:5950
>
> Committed: https://crrev.com/4a627a8c13554d12412cabb8f751caee6e61ee32
> Cr-Commit-Position: refs/heads/master@{#13032}

TBR=wez@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5950

Committed: https://crrev.com/b4c7b8365d9ed11099b4c5bdcc4eeab33923cd9c
Cr-Commit-Position: refs/heads/master@{#13033}
==========

[commit-bot: I haz the power, 2016-06-03 12:56:52]

Patchset 1 (id:??) landed as
https://crrev.com/b4c7b8365d9ed11099b4c5bdcc4eeab33923cd9c
Cr-Commit-Position: refs/heads/master@{#13033}