GN: Fix iOS error in audio_device and rtc_base

GN: Fix iOS error in audio_device and rtc_base

With this in, the only compilation errors left seems
related to yasm and libjpeg_turbo.
Notice the below example builds x86 builds (not ARM) since if
specifying target_cpu="arm", the gn step fails (separate issue).

BUG=webrtc:5213, webrtc:5195, chromium:459705
TESTED=Passing compilation with:
gn gen --args="target_os=\"ios\"" out/Default
ninja -C out/Default rtc_base audio_device

Committed: https://crrev.com/70bed7d4153855e508954df928ad2d9224445dc2
Cr-Commit-Position: refs/heads/master@{#10763}

[kjellander_webrtc, 2015-11-23 09:00:59]

Description was changed from

==========
GN: Fix iOS error in audio_device and rtc_base

With this in, the only compilation errors left seems
related to yasm and libjpeg_turbo.

BUG=webrtc:5213, webrtc:5195
TESTED=Passing compilation with:
gn gen --args="target_os=\"ios\"" out/Default
ninja -C out/Default rtc_base
==========

to

==========
GN: Fix iOS error in audio_device and rtc_base

With this in, the only compilation errors left seems
related to yasm and libjpeg_turbo.

BUG=webrtc:5213, webrtc:5195
TESTED=Passing compilation with:
gn gen --args="target_os=\"ios\"" out/Default
ninja -C out/Default rtc_base audio_device
==========

[kjellander_webrtc, 2015-11-23 09:07:20]

Description was changed from

==========
GN: Fix iOS error in audio_device and rtc_base

With this in, the only compilation errors left seems
related to yasm and libjpeg_turbo.

BUG=webrtc:5213, webrtc:5195
TESTED=Passing compilation with:
gn gen --args="target_os=\"ios\"" out/Default
ninja -C out/Default rtc_base audio_device
==========

to

==========
GN: Fix iOS error in audio_device and rtc_base

With this in, the only compilation errors left seems
related to yasm and libjpeg_turbo.
Notice the below example builds x86 builds (not ARM) since if 
specifying target_cpu="arm", the gn step fails (separate issue).

BUG=webrtc:5213, webrtc:5195
TESTED=Passing compilation with:
gn gen --args="target_os=\"ios\"" out/Default
ninja -C out/Default rtc_base audio_device
==========

[kjellander_webrtc, 2015-11-23 09:18:36]

kjellander@webrtc.org changed reviewers:
+ tommi@webrtc.org

[kjellander_webrtc, 2015-11-23 09:18:36]

This should be the right way to solve the rtc_base error that
sdefresne@chromium.org tried to solve in
https://codereview.webrtc.org/1441323002/

https://codereview.webrtc.org/1471663002/diff/1/webrtc/base/BUILD.gn
File webrtc/base/BUILD.gn (right):

https://codereview.webrtc.org/1471663002/diff/1/webrtc/base/BUILD.gn#newcode13
webrtc/base/BUILD.gn:13: # Enable OpenSSL (BoringSSL) for iOS. This is covered
in webrtc/supplement.gypi
This is globally applied for GYP with supplement.gypi but here it's kept much
closer to where it's used, which is by design in GN (and is great).

And if I try to put this into any of the common configs of
https://chromium.googlesource.com/external/webrtc/+/master/webrtc/BUILD.gn I get
this when running gn gen:
ERROR at //webrtc/BUILD.gn:95:21: Assignment had no effect.
      use_openssl = true
                    ^---
You set the variable "use_openssl" here and it was unused before it went
out of scope.

[kjellander_webrtc, 2015-11-23 09:19:08]

Notice the iOS GN bot is FYI still, as it has more issues that needs to be
worked out.

[kjellander_webrtc, 2015-11-23 09:21:00]

Description was changed from

==========
GN: Fix iOS error in audio_device and rtc_base

With this in, the only compilation errors left seems
related to yasm and libjpeg_turbo.
Notice the below example builds x86 builds (not ARM) since if 
specifying target_cpu="arm", the gn step fails (separate issue).

BUG=webrtc:5213, webrtc:5195
TESTED=Passing compilation with:
gn gen --args="target_os=\"ios\"" out/Default
ninja -C out/Default rtc_base audio_device
==========

to

==========
GN: Fix iOS error in audio_device and rtc_base

With this in, the only compilation errors left seems
related to yasm and libjpeg_turbo.
Notice the below example builds x86 builds (not ARM) since if 
specifying target_cpu="arm", the gn step fails (separate issue).

BUG=webrtc:5213, webrtc:5195, chromium:459705
TESTED=Passing compilation with:
gn gen --args="target_os=\"ios\"" out/Default
ninja -C out/Default rtc_base audio_device
==========

[Dirk Pranke, 2015-11-23 22:55:50]

dpranke@chromium.org changed reviewers:
+ dpranke@chromium.org

[Dirk Pranke, 2015-11-23 22:55:50]

lgtm

[tommi, 2015-11-23 23:47:40]

The CQ bit was checked by tommi@webrtc.org

[tommi, 2015-11-23 23:47:41]

lgtm

[commit-bot: I haz the power, 2015-11-23 23:47:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1471663002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1471663002/1

[commit-bot: I haz the power, 2015-11-24 01:23:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-24 01:23:53]

Patchset 1 (id:??) landed as
https://crrev.com/70bed7d4153855e508954df928ad2d9224445dc2
Cr-Commit-Position: refs/heads/master@{#10763}

[sdefresne, 2015-11-24 08:18:01]

On 2015/11/24 at 01:23:53, commit-bot wrote:
> Patchset 1 (id:??) landed as
https://crrev.com/70bed7d4153855e508954df928ad2d9224445dc2
> Cr-Commit-Position: refs/heads/master@{#10763}

Thank you.