Auto merge of #8903 - KiChjang:layout-reporter-redirect, r=nox

fix for Layout memory reporter uses pre-redirect url

Rebase of #7612.

Fixes #6872.

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components/script/layout_interface.rs

@@ -85,6 +85,9 @@ pub enum Msg {
     ///
     /// This basically exists to keep the script-layout dependency one-way.
     CreateLayoutTask(NewLayoutTaskInfo),
+
+    /// Set the final Url.
+    SetFinalUrl(Url),
 }
 
 /// Synchronous messages that script can send to layout.