Migrate away from deprecated js_util in web_benchmarks

packages/web_benchmarks/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.1.0+10
+
+* Migrates benchmark recorder away from deprecated `js_util` APIs.
+
 ## 0.1.0+9
 
 * Updates minimum supported SDK version to Flutter 3.10/Dart 3.0.

packages/web_benchmarks/lib/src/recorder.dart

@@ -4,10 +4,9 @@
 
 import 'dart:async';
 import 'dart:html' as html;
-import 'dart:js';
-import 'dart:js_util' as js_util;
 import 'dart:math' as math;
 import 'dart:ui';
+import 'dart:ui_web' as ui_web;
 
 import 'package:flutter/foundation.dart';
 import 'package:flutter/gestures.dart';
@@ -1211,19 +1210,21 @@ final Map<String, EngineBenchmarkValueListener> _engineBenchmarkListeners =
 ///
 /// If another listener is already registered, overrides it.
 void registerEngineBenchmarkValueListener(
-    String name, EngineBenchmarkValueListener listener) {
+  String name,
+  EngineBenchmarkValueListener listener,
+) {
   if (_engineBenchmarkListeners.containsKey(name)) {
-    throw StateError('A listener for "$name" is already registered.\n'
-        'Call `stopListeningToEngineBenchmarkValues` to unregister the previous '
-        'listener before registering a new one.');
+    throw StateError(
+      'A listener for "$name" is already registered.\n'
+      'Call `stopListeningToEngineBenchmarkValues` to unregister the previous '
+      'listener before registering a new one.',
+    );
   }
 
   if (_engineBenchmarkListeners.isEmpty) {
     // The first listener is being registered. Register the global listener.
-    js_util.setProperty(html.window, '_flutter_internal_on_benchmark',
-        allowInterop(_dispatchEngineBenchmarkValue));
+    ui_web.benchmarkValueCallback = _dispatchEngineBenchmarkValue;
   }
-
   _engineBenchmarkListeners[name] = listener;
 }
 
@@ -1232,7 +1233,7 @@ void stopListeningToEngineBenchmarkValues(String name) {
   _engineBenchmarkListeners.remove(name);
   if (_engineBenchmarkListeners.isEmpty) {
     // The last listener unregistered. Remove the global listener.
-    js_util.setProperty(html.window, '_flutter_internal_on_benchmark', null);
+    ui_web.benchmarkValueCallback = null;
   }
 }
 

packages/web_benchmarks/pubspec.yaml

@@ -2,7 +2,7 @@ name: web_benchmarks
 description: A benchmark harness for performance-testing Flutter apps in Chrome.
 repository: https://github.com/flutter/packages/tree/main/packages/web_benchmarks
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+web_benchmarks%22
-version: 0.1.0+9
+version: 0.1.0+10
 
 environment:
   sdk: ">=3.0.0 <4.0.0"