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Fixes to support add2app on iOS (#22277)

* Fix xcode_backend.sh script to support add2app

* Fix ios deployment target. Too old for new Xcode.

* Fix ios host app

* Register plugins with Flutter view
M
Mikkel Nygaard Ravn committed
52697ef962ad015eeef665ec7c77c32e99141db8
Parent: eda2284
Committed by Dan Field <dfield@gmail.com> on 9/26/2018, 5:57:05 AM