Add indeterminate progress example

[tomayac]

• Add indeterminate progress example.
• Minor improvements here and there.
• Add myself as contributor.

[ayuishii]

Thanks for the addition!

[ayuishii]

Actually curious about your addition of the Background geotracking or geofencing use case.
Does this geo access change or get less infrequent updates when a tab is backgrounded? Or is it more similar to the system wake lock use case?

[tomayac]

Currently geotracking only works with the screen on and when the tab is in the foreground.

[ayuishii]

I see, I don't think we intent to change any existing privacy requirements for other APIs, like needing the tab in the foreground. But keeping the screen on (preventing the system from entering a sleep state) like system wake lock use case could make sense for this. Does this match your expectations for the geotracking use case?

[tomayac]

For background geotracking to be actually useful and to address the use cases (ignore the rest of the spec draft), we'd need to be able to run it with the screen off and/or with other apps than Chrome in the foreground.

[ayuishii]

I can understand that. I just wanted to clarify that loosening the requirements for geotracking to run it with the screen off or with other apps than Chrome in the background I believe will need to be privacy discussion for Geolocation Sensor API, and not for the Progress Notification API. But if this new requirement is cleared by privacy, than yes I do think Progress Notification API could help with this use case.