Change the returned documentURL to be that of the requested document.
Ensure the return frameId is only returned if available, since it's optional.
Move some common steps into NetworkObserver for later reuse by other Network
events.
Differential Revision: https://phabricator.services.mozilla.com/D74578
To better keep track of available observer classes
it's better to have them all in the same folder.
While moving files around the patch also renames
the TabObserver module to TargetObserver, which
would allow us to add target observers for workers
in the future.
Differential Revision: https://phabricator.services.mozilla.com/D73042
Kris Maglione
Henrik Skupin
Maja Frydrychowicz