Re: [PATCH v3 0/5] MR7997: windows.device.enumeration: Implement initial device enumeration for DeviceWatcher.

[Vibhav Pant (＠vibhavp)]

v2:

* Remove weak references in DeviceWatcher implementation.
* Mark DeviceWatcher refcount tests with`todo_wine`.
* Test for the `Added` handler being invoked.