[GN] Cleanup workaround in build/config/ios/rules.gni.

[GN] Cleanup workaround in build/config/ios/rules.gni.

Remove workaround in build/config/ios/rules.gni now that gn has
been rolled to include support for product_type property.

BUG=597975
Committed: https://crrev.com/27e8737ee5fbc9cf0b8a2d4a2076cd07030f7096
Cr-Commit-Position: refs/heads/master@{#394116}

[sdefresne, 2016-05-03 21:11:19]

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

[sdefresne, 2016-05-03 21:11:20]

So that I do not forget, let's get this CL ready for after next gn roll.

Please take a look.

[brettw, 2016-05-03 21:28:17]

lgtm

[sdefresne, 2016-05-17 12:59:21]

The CQ bit was checked by sdefresne@chromium.org

[commit-bot: I haz the power, 2016-05-17 12:59:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1948753002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1948753002/1

[commit-bot: I haz the power, 2016-05-17 14:02:49]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-17 14:04:10]

Description was changed from

==========
[GN] Cleanup workaround in build/config/ios/rules.gni.

Remove workaround in build/config/ios/rules.gni now that gn has
been rolled to include support for product_type property.

BUG=597975
==========

to

==========
[GN] Cleanup workaround in build/config/ios/rules.gni.

Remove workaround in build/config/ios/rules.gni now that gn has
been rolled to include support for product_type property.

BUG=597975

Committed: https://crrev.com/27e8737ee5fbc9cf0b8a2d4a2076cd07030f7096
Cr-Commit-Position: refs/heads/master@{#394116}
==========

[commit-bot: I haz the power, 2016-05-17 14:04:11]

Patchset 1 (id:??) landed as
https://crrev.com/27e8737ee5fbc9cf0b8a2d4a2076cd07030f7096
Cr-Commit-Position: refs/heads/master@{#394116}