* Moved the default BinaryMessenger instance to ServicesBinding
This reverts commit 821602aef3.
* Added assertion in defaultBinaryMessenger. Also fixed the devicelab tests.
This reverts commit 92ef2b9ce1.
This requires either runApp() or
WidgetsFlutterBinding.ensureInitialized() to have been called before
using any MethodChannels. Plugins broadly rely on MethodChannels and
right now there's no general requirements that they be constructed
within the runApp call, so the ecosystem breakages from this are broader
than originally thought. Reverting for now.
* Deprecates `BinaryMessages` in favor of a default instance of `BinaryMessenger`, called `defaultBinaryMessenger`
* Platform channels use the `defaultBinaryMessenger` for their binaryMessenger default argument.
