310164 2026-03-17 23:07:05 -0700 [Site Isolation] Web Inspector: deterministic Network IDs, event routing, and frontend fixes for cross-origin iframes 2026-03-17 23:29:28 -0700 1 1 1 Unclassified WebKit Web Inspector WebKit Nightly Build Unspecified Unspecified NEW https://github.com/WebKit/WebKit/pull/60842 InRadar P2 Normal --- 310163 1 bburg bburg inspector-bugzilla-changes webkit-bug-importer oldest_to_newest 2191252 0 bburg 2026-03-17 23:07:05 -0700 Add BackendIdentifierRegistry with deterministic type-prefixed protocol IDs (frame-PID.OID, request-PID.OID) so UIProcess and WebContent processes independently compute matching IDs. Route Network events through the multiplexing target. Emit RemoteFrame stubs in Page.getResourceTree. Fix NetworkManager frame lookup for dynamically-added cross-origin iframes with lazy stub creation. Disable PageNetworkAgent under SI to avoid duplicate events. Part of the Site Isolation Network domain support: rdar://143782685 2191253 1 webkit-bug-importer 2026-03-17 23:07:11 -0700 <rdar://problem/172806663> 2191266 2 bburg 2026-03-17 23:28:25 -0700 Pull request: https://github.com/WebKit/WebKit/pull/60842