Anny Gakhokidze eb737dfce2 Bug 1698104 - Fix session restore for about:reader, r=nika,kashav
Implement an observer to wait for correct window events in order to restore tab
content.  Non-SHIP code restores about:reader scroll position after receiving
"AboutReaderContentReady" event, so to achieve the same thing with session
history in parent enabled, we can wait for "AboutReader:Ready" event.

Differential Revision: https://phabricator.services.mozilla.com/D108712
2021-03-23 18:01:23 +00:00
..