dillon1000/react

Inline fbjs/lib/EventListener dependency (#11402)

* Drop fbjs/lib/EventListener from tests

Assert on the underlying native event listener instead.

This test file still needs to be rewritten in terms of public APIs.

* Inline fbjs/lib/EventListener dependency

We explicitly don't want to shim this and we don't use the return value.

We can probably even drop the IE path now since we don't support it.
Not sure if that'll be a true breaking change though.

* Wrap event listeners and the callback passed to requestIdleCallback

This is a FBism.

This uses the injection model in ReactErrorUtils. This isn't technically
going to used for errors but close enough.

This really wants to be eager but we can't because of dynamic injection.