[iOS] Link with base/maccocoathreadhelper.mm on iOS.

[iOS] Link with base/maccocoathreadhelper.mm on iOS.

rtc::ThreadManager::ThreadManager() calls rtc::InitCocoaMultiThreading()
on iOS so add base/maccocoathreadhelper.mm to the file to build on iOS.

Fixes the following linker error:

Undefined symbols for architecture x86_64:
  "rtc::InitCocoaMultiThreading()", referenced from:
      rtc::ThreadManager::ThreadManager() in librtc_base.a(thread.o)

BUG=459705
NOTRY=True

Committed: https://crrev.com/60624cd6bf29c75e02009bd6149ecfb9cb877c7b
Cr-Commit-Position: refs/heads/master@{#12085}

[sdefresne, 2016-03-18 17:16:24]

sdefresne@chromium.org changed reviewers:
+ kjellander@webrtc.org, perkj@webrtc.org

[sdefresne, 2016-03-18 17:16:25]

Please take a look.

[kjellander_webrtc, 2016-03-20 09:52:58]

lgtm, thanks for spotting this. Keeping GYP and GN in sync is hard. We have a
PRESUBMIT checks as reminders, but I'm not aware of any better way to verify
they're in sync. Some kind of diff tool for the ninja output would be ideal.

[sdefresne, 2016-03-21 14:14:32]

perkj: ping?

[perkj_webrtc, 2016-03-21 16:27:54]

lgtm

[sdefresne, 2016-03-22 09:13:35]

The CQ bit was checked by sdefresne@chromium.org

[commit-bot: I haz the power, 2016-03-22 09:13:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1810373003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1810373003/1

[commit-bot: I haz the power, 2016-03-22 10:09:41]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-03-22 10:09:42]

Try jobs failed on following builders:
  android_rel on tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/android_rel/builds/11951)

[kjellander_webrtc, 2016-03-22 10:16:41]

Description was changed from

==========
[iOS] Link with base/maccocoathreadhelper.mm on iOS.

rtc::ThreadManager::ThreadManager() calls rtc::InitCocoaMultiThreading()
on iOS so add base/maccocoathreadhelper.mm to the file to build on iOS.

Fixes the following linker error:

Undefined symbols for architecture x86_64:
  "rtc::InitCocoaMultiThreading()", referenced from:
      rtc::ThreadManager::ThreadManager() in librtc_base.a(thread.o)

BUG=459705
==========

to

==========
[iOS] Link with base/maccocoathreadhelper.mm on iOS.

rtc::ThreadManager::ThreadManager() calls rtc::InitCocoaMultiThreading()
on iOS so add base/maccocoathreadhelper.mm to the file to build on iOS.

Fixes the following linker error:

Undefined symbols for architecture x86_64:
  "rtc::InitCocoaMultiThreading()", referenced from:
      rtc::ThreadManager::ThreadManager() in librtc_base.a(thread.o)

BUG=459705
NOTRY=True
==========

[kjellander_webrtc, 2016-03-22 10:20:47]

On 2016/03/22 10:09:42, commit-bot: I haz the power wrote:
> Try jobs failed on following builders:
>   android_rel on tryserver.webrtc (JOB_FAILED,
>
http://build.chromium.org/p/tryserver.webrtc/builders/android_rel/builds/11951)

I'm setting NOTRY=True since an infra bug makes the symlink step fail on our
bots.
I'm reverting https://codereview.chromium.org/1818083003/ now to fix this.

[kjellander_webrtc, 2016-03-22 10:26:23]

The CQ bit was checked by kjellander@webrtc.org

[commit-bot: I haz the power, 2016-03-22 10:26:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1810373003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1810373003/1

[commit-bot: I haz the power, 2016-03-22 10:32:17]

Description was changed from

==========
[iOS] Link with base/maccocoathreadhelper.mm on iOS.

rtc::ThreadManager::ThreadManager() calls rtc::InitCocoaMultiThreading()
on iOS so add base/maccocoathreadhelper.mm to the file to build on iOS.

Fixes the following linker error:

Undefined symbols for architecture x86_64:
  "rtc::InitCocoaMultiThreading()", referenced from:
      rtc::ThreadManager::ThreadManager() in librtc_base.a(thread.o)

BUG=459705
NOTRY=True
==========

to

==========
[iOS] Link with base/maccocoathreadhelper.mm on iOS.

rtc::ThreadManager::ThreadManager() calls rtc::InitCocoaMultiThreading()
on iOS so add base/maccocoathreadhelper.mm to the file to build on iOS.

Fixes the following linker error:

Undefined symbols for architecture x86_64:
  "rtc::InitCocoaMultiThreading()", referenced from:
      rtc::ThreadManager::ThreadManager() in librtc_base.a(thread.o)

BUG=459705
NOTRY=True
==========

[commit-bot: I haz the power, 2016-03-22 10:32:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-22 10:32:29]

Description was changed from

==========
[iOS] Link with base/maccocoathreadhelper.mm on iOS.

rtc::ThreadManager::ThreadManager() calls rtc::InitCocoaMultiThreading()
on iOS so add base/maccocoathreadhelper.mm to the file to build on iOS.

Fixes the following linker error:

Undefined symbols for architecture x86_64:
  "rtc::InitCocoaMultiThreading()", referenced from:
      rtc::ThreadManager::ThreadManager() in librtc_base.a(thread.o)

BUG=459705
NOTRY=True
==========

to

==========
[iOS] Link with base/maccocoathreadhelper.mm on iOS.

rtc::ThreadManager::ThreadManager() calls rtc::InitCocoaMultiThreading()
on iOS so add base/maccocoathreadhelper.mm to the file to build on iOS.

Fixes the following linker error:

Undefined symbols for architecture x86_64:
  "rtc::InitCocoaMultiThreading()", referenced from:
      rtc::ThreadManager::ThreadManager() in librtc_base.a(thread.o)

BUG=459705
NOTRY=True

Committed: https://crrev.com/60624cd6bf29c75e02009bd6149ecfb9cb877c7b
Cr-Commit-Position: refs/heads/master@{#12085}
==========

[commit-bot: I haz the power, 2016-03-22 10:32:31]

Patchset 1 (id:??) landed as
https://crrev.com/60624cd6bf29c75e02009bd6149ecfb9cb877c7b
Cr-Commit-Position: refs/heads/master@{#12085}