Everywhere: Use URL::about_XXX factory functions

Author: https://github.com/shannonbooth
Commit: 9072a7caef
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3586
Reviewed-by: https://github.com/tcl3 ✅

UI/AppKit/Application/ApplicationDelegate.mm

@@ -180,7 +180,7 @@
         return;
     }
 
-    [self createNewTab:URL::URL("about:version"sv)
+    [self createNewTab:URL::URL(URL::about_version())
                fromTab:(Tab*)current_tab
            activateTab:Web::HTML::ActivateTab::Yes];
 }

UI/Headless/Test.cpp

@@ -382,7 +382,7 @@ static void run_test(HeadlessWebView& view, Test& test, Application& app)
     auto promise = Core::Promise<Empty>::construct();
 
     view.on_load_finish = [promise](auto const& url) {
-        if (!url.equals("about:blank"sv))
+        if (!url.equals(URL::about_blank()))
             return;
 
         Core::deferred_invoke([promise]() {
@@ -411,7 +411,7 @@ static void run_test(HeadlessWebView& view, Test& test, Application& app)
         VERIFY_NOT_REACHED();
     });
 
-    view.load("about:blank"sv);
+    view.load(URL::about_blank());
 }
 
 static void set_ui_callbacks_for_tests(HeadlessWebView& view)

UI/Headless/main.cpp

@@ -63,7 +63,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
     WebView::platform_init();
 
-    auto app = Ladybird::Application::create(arguments, "about:newtab"sv);
+    auto app = Ladybird::Application::create(arguments, URL::about_newtab());
     TRY(app->launch_services());
 
     Core::ResourceImplementation::install(make<Core::ResourceImplementationFile>(MUST(String::from_byte_string(app->resources_folder))));