LibWeb: Start tracking elapsed time when a resource is loaded

Author: https://github.com/bgianfo
Commit: bca8707e15
Pull-request: https://github.com/SerenityOS/serenity/pull/9991
Reviewed-by: https://github.com/awesomekling

Userland/Libraries/LibWeb/Page/Page.h

@@ -42,7 +42,7 @@ public:
     void set_focused_browsing_context(Badge<EventHandler>, BrowsingContext&);
 
     void load(const URL&);
-    void load(const LoadRequest&);
+    void load(LoadRequest&);
 
     void load_html(const StringView&, const URL&);