tree aae7eeb4b30f7f245e4e775fc77609291c592450
parent 4ba1f1fbfcaf4092abc8f6267e7b9d66686563e6
author stuartmorgan <stuartmorgan@google.com> 1558383358 -0400
committer dart-luci-ci-builder <dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com> 1558385338 -0700

Macos systemnavigator pop (#9019)

Adds the flutter/platform channel to the macOS shell, and implements
SystemNavigator.pop.

Other methods from this channel will be implement in the future.

macOS part of flutter/flutter#30713
https://dart.googlesource.com/external/github.com/flutter/engine/+/dbf083bda15740c6c10891a402c81c4ebf67e0fd