Revert "[iOS] Defaults to use system libjpeg on iOS."

Revert "[iOS] Defaults to use system libjpeg on iOS."

Fix the configuration of libjpeg_turbo to build on iOS by using the
same settings as Mac. This is not used by Chrome on iOS AFAIK, but
appears to be used by WebRTC.

BUG=602682
Committed: https://crrev.com/cb3f4114b1b74302570e17e09b59b097d6ee406b
Cr-Commit-Position: refs/heads/master@{#386941}

[sdefresne, 2016-04-12 17:45:04]

sdefresne@chromium.org changed reviewers:
+ brettw@chromium.org

[sdefresne, 2016-04-12 17:45:04]

Please take a look.

This fixes the compilation:
$ gn gen --args='target_os="ios"' out/Default
$ ninja -j 1000 -C out/Default jpeg
ninja: Entering directory `out/Default'
[1/1] Regenerating ninja files
[205/205] STAMP obj/third_party/jpeg.stamp

This target is not used by Chrome on iOS, as there is no path between it and
//:gn_all so I'm surprised that it is build as part of "ninja -C out/Default"
(i.e. building everything). Why is the target generated if not used?

$ gn gen --args='target_os="ios"' out/Default
$ gn path out/Default //:gn_all //third_party:jpeg
No non-data paths found between these two targets.

[kjellander_chromium, 2016-04-12 19:20:37]

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

[kjellander_chromium, 2016-04-12 19:20:38]

Thanks a lot for helping out with this!
I can confirm that from WebRTC's perspective, this solved the problem I was
seeing with jpeg - yay!

[brettw, 2016-04-12 21:57:58]

lgtm

[sdefresne, 2016-04-13 08:21:33]

The CQ bit was checked by sdefresne@chromium.org

[sdefresne, 2016-04-13 08:21:33]

The patchset sent to the CQ was uploaded after l-g-t-m from brettw@chromium.org
Link to the patchset: https://codereview.chromium.org/1886443002/#ps20001
(title: "Put back "libs = [ ... ]" in system_libjpeg_config config")

[commit-bot: I haz the power, 2016-04-13 08:21:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1886443002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1886443002/20001

[commit-bot: I haz the power, 2016-04-13 09:05:46]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-04-13 09:07:30]

Description was changed from

==========
Revert "[iOS] Defaults to use system libjpeg on iOS."

Fix the configuration of libjpeg_turbo to build on iOS by using the
same settings as Mac. This is not used by Chrome on iOS AFAIK, but
appears to be used by WebRTC.

BUG=602682
==========

to

==========
Revert "[iOS] Defaults to use system libjpeg on iOS."

Fix the configuration of libjpeg_turbo to build on iOS by using the
same settings as Mac. This is not used by Chrome on iOS AFAIK, but
appears to be used by WebRTC.

BUG=602682

Committed: https://crrev.com/cb3f4114b1b74302570e17e09b59b097d6ee406b
Cr-Commit-Position: refs/heads/master@{#386941}
==========

[commit-bot: I haz the power, 2016-04-13 09:07:31]

Patchset 2 (id:??) landed as
https://crrev.com/cb3f4114b1b74302570e17e09b59b097d6ee406b
Cr-Commit-Position: refs/heads/master@{#386941}