The tricky part of getting GeckoView to use the native collector is how to handle incremental updates of scroll position and formdata coming from any part of the browsing context tree and any content child process.

The best would probably to move the ownership of the objects referenced by TabStateCache._data.get(permanentKey).formdata and TabStateCache._data.get(permanentKey).scroll to platform, along with TabStateCache.updatePartialWindowStateChange. That way, TabStateCache.update could go back to just receiving an object to store in TabStateCache._data.get(permanentKey).formdata when formdata gets updated, and correspondingly for scroll. Since that object should have a reference from within platform, the call to TabStateCache.update would possibly not be needed, but we might still have to keep it around due to how we restore.

In the case of restore, we would probably see a flow where the object pointed to by TabStateCache._data.get(permanentKey).formdata begins by not having a reference from platform, but when the restore completes we'd collect the data in platform and then write out the new object.

Depends on D131155

Depends on D131156

Unassigning farre since this bug requires GeckoView work. The GeckoView team will look this bug in 101.

Tracking for 102. Blocked waiting for farre to fix bug 1739450 in 101.

Knowledge dump from Kashav about session restore on desktop:

https://docs.google.com/document/d/13OsWKzLXqGgcYTcsY9qw7fCMeGdyxejtonpRi_l_PyM/edit

Agi would like to work on this in 102.

When the session storage prefs are enabled, GeckoSession updateSessionState will provide the bundle of information, including zoom, scroll, and form data, to the delegate. Currently works for Fission and on Fenix.

Backed out changeset 39559c43173a (Bug 1734394) for causing bustages on GeckoBundleUtils.cpp.
Backout link
Push with failures
Failure Log
Also bc4 Failure Log

Please also check this bc failure

Backed out changeset 56a33c1c3210 (Bug 1734394) for causing build bustages in GeckoBundleUtils.cpp CLOSED TREE

Push with failures: https://treeherder.mozilla.org/jobs?repo=autoland&group_state=expanded&collapsedPushes=842382&selectedTaskRun=cVfNGWgiSjGblVpyArsuKQ.0&resultStatus=testfailed%2Cbusted%2Cexception%2Cretry%2Cusercancel&revision=56a33c1c32104ca5121279306c265a208720ab02

Log: https://treeherder.mozilla.org/logviewer?job_id=382463778&repo=autoland&lineNumber=38235

Backout: https://hg.mozilla.org/integration/autoland/rev/7c4f1e3d814342a8f5aa52258a349e4289469183

Moving Android Fission bugs to the new GeckoView::Sandboxing component.

Backed out for causing Assertion failures on StaticPrefList_browser.h. CLOSED TREE
Backout link
Push with failures
Link to failure log
Failure line :
Assertion failure: staticPrefValue == preferenceValue (Preference 'browser.sessionstore.platform_collection' got modified since StaticPrefs::browser_sessionstore_platform_collection_AtStartup was initialized. Consider using an always mirror kind instead), at /builds/worker/workspace/obj-build/dist/include/mozilla/StaticPrefList_browser.h:504

When the session storage prefs are enabled, GeckoSession updateSessionState will provide the bundle of information, including zoom, scroll, and form data, to the delegate. Currently works for Fission and on Fenix.

https://hg.mozilla.org/mozilla-central/rev/519c8a9a5f8c

Since nightly and release are affected, beta will likely be affected too.
For more information, please visit auto_nag documentation.