[web] Remove the JS API for url strategy

ci/licenses_golden/licenses_flutter

@@ -1975,10 +1975,7 @@ ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/js_interop/js_typed_data.dart
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/key_map.g.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/keyboard_binding.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/mouse_cursor.dart + ../../../flutter/LICENSE
-ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/navigation.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/navigation/history.dart + ../../../flutter/LICENSE
-ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/navigation/js_url_strategy.dart + ../../../flutter/LICENSE
-ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/navigation/url_strategy.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/noto_font.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/onscreen_logging.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/picture.dart + ../../../flutter/LICENSE
@@ -4639,10 +4636,7 @@ FILE: ../../../flutter/lib/web_ui/lib/src/engine/js_interop/js_typed_data.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/key_map.g.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/keyboard_binding.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/mouse_cursor.dart
-FILE: ../../../flutter/lib/web_ui/lib/src/engine/navigation.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/navigation/history.dart
-FILE: ../../../flutter/lib/web_ui/lib/src/engine/navigation/js_url_strategy.dart
-FILE: ../../../flutter/lib/web_ui/lib/src/engine/navigation/url_strategy.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/noto_font.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/onscreen_logging.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/picture.dart

lib/web_ui/lib/src/engine.dart

@@ -113,8 +113,6 @@ export 'engine/key_map.g.dart';
 export 'engine/keyboard_binding.dart';
 export 'engine/mouse_cursor.dart';
 export 'engine/navigation/history.dart';
-export 'engine/navigation/js_url_strategy.dart';
-export 'engine/navigation/url_strategy.dart';
 export 'engine/noto_font.dart';
 export 'engine/onscreen_logging.dart';
 export 'engine/picture.dart';

lib/web_ui/lib/src/engine/initialization.dart

@@ -8,7 +8,6 @@ import 'dart:js_interop';
 
 import 'package:ui/src/engine.dart';
 import 'package:ui/ui.dart' as ui;
-import 'package:ui/ui_web/src/ui_web.dart' as ui_web;
 import 'package:web_test_fonts/web_test_fonts.dart';
 
 /// The mode the app is running in.
@@ -133,10 +132,6 @@ Future<void> initializeEngineServices({
   // Store `jsConfiguration` so user settings are available to the engine.
   configuration.setUserConfiguration(jsConfiguration);
 
-  // Setup the hook that allows users to customize URL strategy before running
-  // the app.
-  _addUrlStrategyListener();
-
   // Called by the Web runtime just before hot restarting the app.
   //
   // This extension cleans up resources that are registered with browser's
@@ -263,26 +258,6 @@ Future<void> _downloadAssetFonts() async {
   }
 }
 
-void _addUrlStrategyListener() {
-  jsSetUrlStrategy = allowInterop((JsUrlStrategy? jsStrategy) {
-    if (jsStrategy == null) {
-      ui_web.urlStrategy = null;
-    } else {
-      // Because `JSStrategy` could be anything, we check for the
-      // `addPopStateListener` property and throw if it is missing.
-      if (!hasJsProperty(jsStrategy, 'addPopStateListener')) {
-        throw StateError(
-            'Unexpected JsUrlStrategy: $jsStrategy is missing '
-            '`addPopStateListener` property');
-      }
-      ui_web.urlStrategy = CustomUrlStrategy.fromJs(jsStrategy);
-    }
-  });
-  registerHotRestartListener(() {
-    jsSetUrlStrategy = null;
-  });
-}
-
 /// Whether to disable the font fallback system.
 ///
 /// We need to disable font fallbacks for some framework tests because

lib/web_ui/lib/src/engine/test_embedding.dart

@@ -30,7 +30,7 @@ class TestHistoryEntry {
 ///
 /// It keeps a list of history entries and event listeners in memory and
 /// manipulates them in order to achieve the desired functionality.
-class TestUrlStrategy extends ui_web.UrlStrategy {
+class TestUrlStrategy implements ui_web.UrlStrategy {
   /// Creates a instance of [TestUrlStrategy] with an empty string as the
   /// path.
   factory TestUrlStrategy() => TestUrlStrategy.fromEntry(const TestHistoryEntry(null, null, ''));

lib/web_ui/lib/src/engine/window.dart

@@ -16,7 +16,6 @@ import 'package:ui/ui_web/src/ui_web.dart' as ui_web;
 import '../engine.dart' show DimensionsProvider, registerHotRestartListener, renderer;
 import 'dom.dart';
 import 'navigation/history.dart';
-import 'navigation/js_url_strategy.dart';
 import 'platform_dispatcher.dart';
 import 'services.dart';
 import 'util.dart';
@@ -324,16 +323,6 @@ class EngineFlutterWindow extends ui.SingletonFlutterWindow {
   ui.Size? webOnlyDebugPhysicalSizeOverride;
 }
 
-typedef _JsSetUrlStrategy = void Function(JsUrlStrategy?);
-
-/// A JavaScript hook to customize the URL strategy of a Flutter app.
-//
-// DO NOT CHANGE THE JS NAME, IT IS PUBLIC API AT THIS POINT.
-//
-// TODO(mdebbar): Add integration test https://github.com/flutter/flutter/issues/66852
-@JS('_flutter_web_set_location_strategy')
-external set jsSetUrlStrategy(_JsSetUrlStrategy? newJsSetUrlStrategy);
-
 /// The Web implementation of [ui.SingletonFlutterWindow].
 class EngineSingletonFlutterWindow extends EngineFlutterWindow {
   EngineSingletonFlutterWindow(

lib/web_ui/lib/ui_web/src/ui_web/navigation/url_strategy.dart

@@ -82,11 +82,7 @@ typedef PopStateListener = void Function(Object? state);
 ///
 /// By default, the [HashUrlStrategy] subclass is used if the app doesn't
 /// specify one.
-abstract class UrlStrategy {
-  /// Abstract const constructor. This constructor enables subclasses to provide
-  /// const constructors so that they can be used in const expressions.
-  const UrlStrategy();
-
+abstract interface class UrlStrategy {
   /// Adds a listener to the `popstate` event and returns a function that, when
   /// invoked, removes the listener.
   ui.VoidCallback addPopStateListener(PopStateListener fn);
@@ -139,7 +135,7 @@ abstract class UrlStrategy {
 /// // Somewhere before calling `runApp()` do:
 /// setUrlStrategy(const HashUrlStrategy());
 /// ```
-class HashUrlStrategy extends UrlStrategy {
+class HashUrlStrategy implements UrlStrategy {
   /// Creates an instance of [HashUrlStrategy].
   ///
   /// The [PlatformLocation] parameter is useful for testing to mock out browser

lib/web_ui/test/engine/history_test.dart

@@ -8,9 +8,8 @@ import 'package:quiver/testing/async.dart';
 import 'package:test/bootstrap/browser.dart';
 import 'package:test/test.dart';
 import 'package:ui/src/engine.dart' show window;
-import 'package:ui/src/engine/dom.dart'
-    show DomEvent, createDomPopStateEvent;
-import 'package:ui/src/engine/navigation.dart';
+import 'package:ui/src/engine/dom.dart' show DomEvent, createDomPopStateEvent;
+import 'package:ui/src/engine/navigation/history.dart';
 import 'package:ui/src/engine/services.dart';
 import 'package:ui/src/engine/test_embedding.dart';
 import 'package:ui/ui_web/src/ui_web.dart';