Automatic iOS signing instead of the manual one (#160)
Automatic iOS signing instead of the manual one (#160)

This would allow running the app on an iPhone without extra Xcode
setup, and therefore allows the device lab to automatically benchmark
the app on iOS.

Former-commit-id: 62e633b9e9360ee57dafaaeabbb7fbf85e7642d1
flutter/gallery,flutter/gallery,flutter/gallery,flutter/gallery,flutter/gallery,flutter/gallery,flutter/gallery