Add umbrella header check on PRs (#10381)
Add umbrella header check on PRs (#10381)

* Revert "Include subheaders in script output (#10212)"

This reverts commit 11313da887c7290d1ed3318695a9350f3d4185b5.

* Revert "Revert "Add new danger check (#10338)" (#10355)"

This reverts commit e190b63a93e6d52cea7a542d8d9668088889e3a1.

* Add umbrella header check again

* make warning for now

* fix syntax error

* Test danger

* syntax error

* actually fix syntaax

* test 2

* lose sanity

* test warning resolution

* remove test changes
firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk