[web] Use plain platform views in benchmarks (#126080)

Removing the dependency between web benchmarks and `url_launcher`'s `Link` widget.

dev/benchmarks/macrobenchmarks/.gitignore

-lib/generated_plugin_registrant.dart
 devtools_memory.json
 *.sksl.json
 vmservice.out

dev/benchmarks/macrobenchmarks/lib/src/web/bench_link_infinite_scroll.dart → dev/benchmarks/macrobenchmarks/lib/src/web/bench_platform_view_infinite_scroll.dart

@@ -3,49 +3,75 @@
 // found in the LICENSE file.
 
 import 'dart:async';
+import 'dart:html' as html;
 
 import 'package:flutter/material.dart';
-import 'package:url_launcher/link.dart';
-
 
+// TODO(mdebbar): flutter/flutter#55000 Remove this conditional import once
+// web-only dart:ui_web APIs are exposed from a dedicated place.
+import 'platform_views/non_web.dart'
+    if (dart.library.html) 'platform_views/web.dart';
 import 'recorder.dart';
 
+const String benchmarkViewType = 'benchmark_element';
+
+void _registerFactory() {
+  platformViewRegistry.registerViewFactory(benchmarkViewType, (int viewId) {
+    final html.Element htmlElement = html.DivElement();
+    htmlElement.id = '${benchmarkViewType}_$viewId';
+    htmlElement.innerText = 'Google';
+    htmlElement.style
+      ..width = '100%'
+      ..height = '100%'
+      ..color = 'black'
+      ..backgroundColor = 'rgba(0, 255, 0, .5)'
+      ..textAlign = 'center'
+      ..border = '1px solid black';
+    return htmlElement;
+  });
+}
+
 /// Creates an infinite list of Link widgets and scrolls it.
-class BenchLinkInfiniteScroll extends WidgetRecorder {
-  BenchLinkInfiniteScroll.forward()
-    : initialOffset = 0.0,
-      finalOffset = 30000.0,
-      super(name: benchmarkName);
+class BenchPlatformViewInfiniteScroll extends WidgetRecorder {
+  BenchPlatformViewInfiniteScroll.forward()
+      : initialOffset = 0.0,
+        finalOffset = 30000.0,
+        super(name: benchmarkName) {
+    _registerFactory();
+  }
 
-  BenchLinkInfiniteScroll.backward()
-    : initialOffset = 30000.0,
-      finalOffset = 0.0,
-      super(name: benchmarkNameBackward);
+  BenchPlatformViewInfiniteScroll.backward()
+      : initialOffset = 30000.0,
+        finalOffset = 0.0,
+        super(name: benchmarkNameBackward) {
+    _registerFactory();
+  }
 
-  static const String benchmarkName = 'bench_link_infinite_scroll';
-  static const String benchmarkNameBackward = 'bench_link_infinite_scroll_backward';
+  static const String benchmarkName = 'bench_platform_view_infinite_scroll';
+  static const String benchmarkNameBackward =
+      'bench_platform_view_infinite_scroll_backward';
 
   final double initialOffset;
   final double finalOffset;
 
   @override
   Widget createWidget() => MaterialApp(
-    title: 'Infinite Link Scroll Benchmark',
-    home: _InfiniteScrollLinks(initialOffset, finalOffset),
-  );
+        title: 'Infinite Platform View Scroll Benchmark',
+        home: _InfiniteScrollPlatformViews(initialOffset, finalOffset),
+      );
 }
 
-class _InfiniteScrollLinks extends StatefulWidget {
-  const _InfiniteScrollLinks(this.initialOffset, this.finalOffset);
+class _InfiniteScrollPlatformViews extends StatefulWidget {
+  const _InfiniteScrollPlatformViews(this.initialOffset, this.finalOffset);
 
   final double initialOffset;
   final double finalOffset;
 
   @override
-  State<_InfiniteScrollLinks> createState() => _InfiniteScrollLinksState();
+  State<_InfiniteScrollPlatformViews> createState() => _InfiniteScrollPlatformViewsState();
 }
 
-class _InfiniteScrollLinksState extends State<_InfiniteScrollLinks> {
+class _InfiniteScrollPlatformViewsState extends State<_InfiniteScrollPlatformViews> {
   static const Duration stepDuration = Duration(seconds: 20);
 
   late ScrollController scrollController;
@@ -83,15 +109,9 @@ class _InfiniteScrollLinksState extends State<_InfiniteScrollLinks> {
       controller: scrollController,
       itemExtent: 100.0,
       itemBuilder: (BuildContext context, int index) {
-        return SizedBox(
+        return const SizedBox(
           height: 100.0,
-          child: Link(
-            uri: Uri.parse('https://www.google.com'),
-            builder: (BuildContext context, FollowLink? followLink) => ElevatedButton(
-              onPressed: followLink,
-              child: const Text('Google'),
-            ),
-          ),
+          child: HtmlElementView(viewType: benchmarkViewType),
         );
       },
     );

dev/benchmarks/macrobenchmarks/lib/src/web/platform_views/non_web.dart

+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// ignore: avoid_classes_with_only_static_members
+/// Shim for web_ui engine.PlatformViewRegistry
+/// https://github.com/flutter/engine/blob/master/lib/web_ui/lib/ui.dart#L62
+// ignore: camel_case_types
+class platformViewRegistry {
+  /// Shim for registerViewFactory
+  /// https://github.com/flutter/engine/blob/master/lib/web_ui/lib/ui.dart#L72
+  static void registerViewFactory(
+      String viewTypeId, dynamic Function(int viewId) viewFactory,
+      {bool isVisible = true}) {}
+}

dev/benchmarks/macrobenchmarks/lib/src/web/platform_views/web.dart

+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+export 'dart:ui';

dev/benchmarks/macrobenchmarks/lib/web_benchmarks.dart

@@ -16,7 +16,6 @@ import 'src/web/bench_default_target_platform.dart';
 import 'src/web/bench_draw_rect.dart';
 import 'src/web/bench_dynamic_clip_on_static_picture.dart';
 import 'src/web/bench_image_decoding.dart';
-import 'src/web/bench_link_infinite_scroll.dart';
 import 'src/web/bench_material_3.dart';
 import 'src/web/bench_mouse_region_grid_hover.dart';
 import 'src/web/bench_mouse_region_grid_scroll.dart';
@@ -24,6 +23,7 @@ import 'src/web/bench_mouse_region_mixed_grid_hover.dart';
 import 'src/web/bench_pageview_scroll_linethrough.dart';
 import 'src/web/bench_paths.dart';
 import 'src/web/bench_picture_recording.dart';
+import 'src/web/bench_platform_view_infinite_scroll.dart';
 import 'src/web/bench_simple_lazy_text_scroll.dart';
 import 'src/web/bench_text_layout.dart';
 import 'src/web/bench_text_out_of_picture_bounds.dart';
@@ -59,8 +59,8 @@ final Map<String, RecorderFactory> benchmarks = <String, RecorderFactory>{
   BenchMouseRegionGridHover.benchmarkName: () => BenchMouseRegionGridHover(),
   BenchMouseRegionMixedGridHover.benchmarkName: () => BenchMouseRegionMixedGridHover(),
   BenchWrapBoxScroll.benchmarkName: () => BenchWrapBoxScroll(),
-  BenchLinkInfiniteScroll.benchmarkName: () => BenchLinkInfiniteScroll.forward(),
-  BenchLinkInfiniteScroll.benchmarkNameBackward: () => BenchLinkInfiniteScroll.backward(),
+  BenchPlatformViewInfiniteScroll.benchmarkName: () => BenchPlatformViewInfiniteScroll.forward(),
+  BenchPlatformViewInfiniteScroll.benchmarkNameBackward: () => BenchPlatformViewInfiniteScroll.backward(),
   BenchMaterial3Components.benchmarkName: () => BenchMaterial3Components(),
 
   // CanvasKit-only benchmarks