Revert of GN: Enable ARC for Mac and iOS in rtc_* templates

Revert of GN: Enable ARC for Mac and iOS in rtc_* templates (patchset #3 id:40001 of https://codereview.webrtc.org/2781713004/ )

Reason for revert:
Breaks mac build

Original issue's description:
> GN: Enable ARC for Mac and iOS in rtc_* templates
> 
> Remove all uses of retain/release and NSAutoreleasePool.
> 
> This makes transformation to Bazel easier.
> 
> This CL subsumes https://codereview.webrtc.org/2778163002 and depends on https://codereview.webrtc.org/2784483002/
> 
> BUG=webrtc:6412
> 
> Review-Url: https://codereview.webrtc.org/2781713004
> Cr-Commit-Position: refs/heads/master@{#17780}
> Committed: https://chromium.googlesource.com/external/webrtc/+/6bda02b51dc00401d2a0d04be996ed10e5acac47

TBR=kjellander@webrtc.org,magjed@webrtc.org,stefan@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6412
Review-Url: https://codereview.webrtc.org/2827223003
Cr-Commit-Position: refs/heads/master@{#17784}
Committed: https://chromium.googlesource.com/external/webrtc/+/7c8786ae8f2d8481f74b0ab16eb91a8101fe51dc

[kthelgason, 2017-04-20 10:54:09]

The CQ bit was checked by kthelgason@webrtc.org

[kthelgason, 2017-04-20 10:54:09]

Created Revert of GN: Enable ARC for Mac and iOS in rtc_* templates

[commit-bot: I haz the power, 2017-04-20 10:54:18]

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, 2017-04-20 10:54:22]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1492685649366750, "parent_rev":
"4e72b0f87ca1232127b9eeefdf6bcb47b5a89764", "commit_rev":
"7c8786ae8f2d8481f74b0ab16eb91a8101fe51dc"}

[commit-bot: I haz the power, 2017-04-20 10:54:27]

Description was changed from

==========
Revert of GN: Enable ARC for Mac and iOS in rtc_* templates (patchset #3
id:40001 of https://codereview.webrtc.org/2781713004/ )

Reason for revert:
Breaks mac build

Original issue's description:
> GN: Enable ARC for Mac and iOS in rtc_* templates
> 
> Remove all uses of retain/release and NSAutoreleasePool.
> 
> This makes transformation to Bazel easier.
> 
> This CL subsumes https://codereview.webrtc.org/2778163002 and depends on
https://codereview.webrtc.org/2784483002/
> 
> BUG=webrtc:6412
> 
> Review-Url: https://codereview.webrtc.org/2781713004
> Cr-Commit-Position: refs/heads/master@{#17780}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/6bda02b51dc00401d2a0d04be...

TBR=kjellander@webrtc.org,magjed@webrtc.org,stefan@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6412
==========

to

==========
Revert of GN: Enable ARC for Mac and iOS in rtc_* templates (patchset #3
id:40001 of https://codereview.webrtc.org/2781713004/ )

Reason for revert:
Breaks mac build

Original issue's description:
> GN: Enable ARC for Mac and iOS in rtc_* templates
> 
> Remove all uses of retain/release and NSAutoreleasePool.
> 
> This makes transformation to Bazel easier.
> 
> This CL subsumes https://codereview.webrtc.org/2778163002 and depends on
https://codereview.webrtc.org/2784483002/
> 
> BUG=webrtc:6412
> 
> Review-Url: https://codereview.webrtc.org/2781713004
> Cr-Commit-Position: refs/heads/master@{#17780}
> Committed:
https://chromium.googlesource.com/external/webrtc/+/6bda02b51dc00401d2a0d04be...

TBR=kjellander@webrtc.org,magjed@webrtc.org,stefan@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6412

Review-Url: https://codereview.webrtc.org/2827223003
Cr-Commit-Position: refs/heads/master@{#17784}
Committed:
https://chromium.googlesource.com/external/webrtc/+/7c8786ae8f2d8481f74b0ab16...
==========

[commit-bot: I haz the power, 2017-04-20 10:54:28]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/7c8786ae8f2d8481f74b0ab16...

[kjellander_webrtc, 2017-04-20 11:01:33]

lgtm, but for future reference - please provide at least one buildbot link in
case the reland might take a while. Then it's good to know the exact error.

[kthelgason, 2017-04-22 19:27:44]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.webrtc.org/2834273002/ by kthelgason@webrtc.org.

The reason for reverting is: Relanding after fixing ARC issue..