1697838 - Ensure frameloader swap works correctly when bfcache lives in the parent process

Status: RESOLVED FIXED

(Core :: DOM: Navigation, defect, P3)

Description

[Olli Pettay [:smaug][[e-mail]]]

Currently ownerContent is updated on all the relevant bfcache'd frameloaders, but there are more things to update.

Comment 1

[Olli Pettay [:smaug][[e-mail]]]

Attachment: Bug 1697838, explictly evict bfcache when doing a frameloader swap r=peterv

This is in practice the behavior already, because swap is really a move and removing the old tab, and
when removing the other tab, the bfcached frameloaders are destroyed. But they stay still in the session history.
So this patch clears session history explicitly.

As long as we have message managers, we can't really support bfcache in this case, since we can't swap message managers,
there are no corresponding managers on the other side.
Message managers need to stay always in the original window, since the listeners are from there.

WindowActors do move with frameloader/browsingcontext, but that leads easily to memory leaks.
https://bugzilla.mozilla.org/show_bug.cgi?id=1697918 is about that and it has nothing to do with bfcache.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/ce2f687e98cb
explictly evict bfcache when doing a frameloader swap r=peterv

Comment 3

[Cristian Brindusan [:cbrindusan]]

https://hg.mozilla.org/mozilla-central/rev/ce2f687e98cb