Due to some obvious bugs in the code of TabObserver.jsm the registered
targets for each of the window's tabs haven't been unregistered when
the window has been closed.
It has the effect that when closing the Remote Agent the browsingContext
of the tab target, which has to be destroyed, cannot be retrieved.
Instead an error is raises, because the underlying frameLoader actually
doesn't exist anymore.
Given that "TabClose" events aren't fired when the window closes,
those have to be emulated.
Differential Revision: https://phabricator.services.mozilla.com/D50231
--HG--
extra : moz-landing-system : lando
* TabObserver is rather an helper class of Targets rather than RemoteAgent.
Targets is the class which holds all the targets and reports about their
creation and destructor. It feels legitimate to have it directly integrate
with TabObserver.
* To better sort of the files. i.e. avoid having "random files" in /remote/
I'm renaming and moving TabObserver according to its usage.
* We were emitting "connect" and "disconnect" event when a target was created
or destroyed. But this is misleading as there is no connection to anything
being made. Only later, a CDP client might connect to a target HTTP endpoint
and initiate a connection. These events are making this hard to understand
that the connection actually happens when Target.handle is called.
Differential Revision: https://phabricator.services.mozilla.com/D37043
--HG--
rename : remote/WindowManager.jsm => remote/targets/TabObserver.jsm
extra : moz-landing-system : lando
Henrik Skupin
Boris Zbarsky
Alexandre Poirot