RESOLVED FIXED313027
[BFCache] Add multi-process restoration for BFCache with Site Isolation 
https://bugs.webkit.org/show_bug.cgi?id=313027
Summary [BFCache] Add multi-process restoration for BFCache with Site Isolation
Basuke Suzuki
Reported 2026-04-22 14:05:07 PDT
Restore pages with cross-site iframes from BFCache under Site Isolation. When navigating back, the suspended page and its iframe processes are unsuspended, the WebCore BackForwardCache entries are restored, and the frame tree (including RemoteFrames) is reconstructed. The browsing context group is swapped back onto the page, preserving existing RemotePageProxy objects.
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Add attachment proposed patch, testcase, etc.
Basuke Suzuki
Comment 1 2026-04-22 14:13:32 PDT
<rdar://problem/173743733>
Basuke Suzuki
Comment 2 2026-04-22 14:13:48 PDT
Pull request: https://github.com/WebKit/WebKit/pull/63355
EWS
Comment 3 2026-05-11 22:06:40 PDT
Committed 313059@main (fceeb850c1e2): <https://commits.webkit.org/313059@main> Reviewed commits have been landed. Closing PR #63355 and removing active labels.
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