[web] Remove deprecated web-only APIs from dart:ui (#161775)

These web-only APIs have been moved to `dart:ui_web` ages ago
(https://github.com/flutter/flutter/issues/126831).

Closes https://github.com/flutter/flutter/issues/127395

engine/src/flutter/ci/licenses_golden/licenses_flutter

@@ -41149,7 +41149,6 @@ ORIGIN: ../../../flutter/lib/web_ui/lib/canvas.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/channel_buffers.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/compositing.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/geometry.dart + ../../../flutter/LICENSE
-ORIGIN: ../../../flutter/lib/web_ui/lib/initialization.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/key.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/lerp.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/math.dart + ../../../flutter/LICENSE
@@ -44097,7 +44096,6 @@ FILE: ../../../flutter/lib/web_ui/lib/canvas.dart
 FILE: ../../../flutter/lib/web_ui/lib/channel_buffers.dart
 FILE: ../../../flutter/lib/web_ui/lib/compositing.dart
 FILE: ../../../flutter/lib/web_ui/lib/geometry.dart
-FILE: ../../../flutter/lib/web_ui/lib/initialization.dart
 FILE: ../../../flutter/lib/web_ui/lib/key.dart
 FILE: ../../../flutter/lib/web_ui/lib/lerp.dart
 FILE: ../../../flutter/lib/web_ui/lib/math.dart

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

@@ -1,104 +0,0 @@
-// Copyright 2013 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.
-
-// TODO(yjbanov): rename this file to web_only_api.dart.
-//                https://github.com/flutter/flutter/issues/100394
-//                Rather than extending this file with new APIs, we
-//                should instead use js interop.
-
-// This file contains extra web-only API that non-web engines do not have.
-//
-// Why have web-only API?
-//
-// Because all Dart code is compiled (and tree shaken) as a single compilation
-// unit it only has one entry-point - the `main()` function of the Flutter
-// app. The top-level `main()` is generated by Flutter tool and it needs to
-// ask the engine to initialize itself before calling the handwritten `main()`
-// function of the app itself. To do that, it needs something to call. The
-// mobile engine doesn't provide a function like that because the application
-// starts from the Java (Android) or Objective-C (iOS). Any initial
-// configuration can be done in Java and the engine's C++ code prior to
-// calling Dart's `main()`.
-
-part of ui;
-
-// TODO(mdebbar): Deprecate this and remove it.
-// https://github.com/flutter/flutter/issues/127395
-Future<void> webOnlyWarmupEngine({VoidCallback? registerPlugins, VoidCallback? runApp}) {
-  assert(() {
-    engine.printWarning(
-      'The webOnlyWarmupEngine API is deprecated and will be removed in a '
-      'future release. Please use `bootstrapEngine` from `dart:ui_web` instead.',
-    );
-    return true;
-  }());
-  return ui_web.bootstrapEngine(registerPlugins: registerPlugins, runApp: runApp);
-}
-
-// TODO(mdebbar): Deprecate this and remove it.
-// https://github.com/flutter/flutter/issues/127395
-bool get debugEmulateFlutterTesterEnvironment {
-  assert(() {
-    engine.printWarning(
-      'The debugEmulateFlutterTesterEnvironment getter is deprecated and will '
-      'be removed in a future release. Please use '
-      '`debugEmulateFlutterTesterEnvironment` from `dart:ui_web` instead.',
-    );
-    return true;
-  }());
-  return ui_web.debugEmulateFlutterTesterEnvironment;
-}
-
-// TODO(mdebbar): Deprecate this and remove it.
-// https://github.com/flutter/flutter/issues/127395
-set debugEmulateFlutterTesterEnvironment(bool value) {
-  assert(() {
-    engine.printWarning(
-      'The debugEmulateFlutterTesterEnvironment setter is deprecated and will '
-      'be removed in a future release. Please use '
-      '`debugEmulateFlutterTesterEnvironment` from `dart:ui_web` instead.',
-    );
-    return true;
-  }());
-  ui_web.debugEmulateFlutterTesterEnvironment = value;
-}
-
-// TODO(mdebbar): Deprecate this and remove it.
-// https://github.com/flutter/flutter/issues/127395
-ui_web.AssetManager get webOnlyAssetManager {
-  assert(() {
-    engine.printWarning(
-      'The webOnlyAssetManager getter is deprecated and will be removed in a '
-      'future release. Please use `assetManager` from `dart:ui_web` instead.',
-    );
-    return true;
-  }());
-  return ui_web.assetManager;
-}
-
-// TODO(mdebbar): Deprecate this and remove it.
-// https://github.com/flutter/flutter/issues/127395
-void webOnlySetPluginHandler(PlatformMessageCallback handler) {
-  assert(() {
-    engine.printWarning(
-      'The webOnlySetPluginHandler API is deprecated and will be removed in a '
-      'future release. Please use `setPluginHandler` from `dart:ui_web` instead.',
-    );
-    return true;
-  }());
-  ui_web.setPluginHandler(handler);
-}
-
-// TODO(mdebbar): Deprecate this and remove it.
-// https://github.com/flutter/flutter/issues/127395
-ui_web.PlatformViewRegistry get platformViewRegistry {
-  assert(() {
-    engine.printWarning(
-      'The platformViewRegistry getter is deprecated and will be removed in a '
-      'future release. Please import it from `dart:ui_web` instead.',
-    );
-    return true;
-  }());
-  return ui_web.platformViewRegistry;
-}

engine/src/flutter/lib/web_ui/lib/painting.dart

@@ -689,23 +689,6 @@ class TargetImageSize {
   final int? height;
 }
 
-// TODO(mdebbar): Deprecate this and remove it.
-// https://github.com/flutter/flutter/issues/127395
-Future<Codec> webOnlyInstantiateImageCodecFromUrl(
-  Uri uri, {
-  ui_web.ImageCodecChunkCallback? chunkCallback,
-}) {
-  assert(() {
-    engine.printWarning(
-      'The webOnlyInstantiateImageCodecFromUrl API is deprecated and will be '
-      'removed in a future release. Please use `createImageCodecFromUrl` from '
-      '`dart:ui_web` instead.',
-    );
-    return true;
-  }());
-  return ui_web.createImageCodecFromUrl(uri, chunkCallback: chunkCallback);
-}
-
 void decodeImageFromList(Uint8List list, ImageDecoderCallback callback) {
   _decodeImageFromListAsync(list, callback);
 }

engine/src/flutter/lib/web_ui/lib/src/engine/html_image_element_codec.dart

@@ -8,10 +8,6 @@ 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;
 
-// TODO(mdebbar): Deprecate this and remove it.
-// https://github.com/flutter/flutter/issues/127395
-typedef WebOnlyImageCodecChunkCallback = ui_web.ImageCodecChunkCallback;
-
 abstract class HtmlImageElementCodec implements ui.Codec {
   HtmlImageElementCodec(this.src, {this.chunkCallback, this.debugSource});
 

engine/src/flutter/lib/web_ui/lib/src/engine/profiler.dart

@@ -3,17 +3,9 @@
 // found in the LICENSE file.
 
 import 'dart:async';
-import 'dart:js_interop';
 
 import 'package:ui/ui_web/src/ui_web.dart' as ui_web;
 
-import 'util.dart';
-
-// TODO(mdebbar): Deprecate this and remove it.
-// https://github.com/flutter/flutter/issues/127395
-@JS('window._flutter_internal_on_benchmark')
-external JSExportedDartFunction? get jsBenchmarkValueCallback;
-
 ui_web.BenchmarkValueCallback? engineBenchmarkValueCallback;
 
 /// A function that computes a value of type [R].
@@ -59,8 +51,8 @@ R timeAction<R>(String name, Action<R> action) {
 ///
 /// 1. Set the environment variable `FLUTTER_WEB_ENABLE_PROFILING` to true.
 ///
-/// 2. Using JS interop, assign a listener function to
+/// 2. Set the [engineBenchmarkValueCallback] to a function that will receive
-///    `window._flutter_internal_on_benchmark` in the browser.
+///   the benchmark data.
 ///
 /// The listener function will be called every time a new benchmark number is
 /// calculated. The signature is `Function(String name, num value)`.
@@ -105,17 +97,6 @@ class Profiler {
   void benchmark(String name, double value) {
     _checkBenchmarkMode();
 
-    final ui_web.BenchmarkValueCallback? callback =
-        jsBenchmarkValueCallback?.toDart as ui_web.BenchmarkValueCallback?;
-    if (callback != null) {
-      printWarning(
-        'The JavaScript benchmarking API (i.e. `window._flutter_internal_on_benchmark`) '
-        'is deprecated and will be removed in a future release. Please use '
-        '`benchmarkValueCallback` from `dart:ui_web` instead.',
-      );
-      callback(name, value);
-    }
-
     if (engineBenchmarkValueCallback != null) {
       engineBenchmarkValueCallback!(name, value);
     }

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

@@ -656,50 +656,6 @@ final class EngineFlutterWindow extends EngineFlutterView implements ui.Singleto
       return false;
     });
   }
-
-  // TODO(mdebbar): Deprecate this and remove it.
-  // https://github.com/flutter/flutter/issues/127395
-  void debugOverrideDevicePixelRatio(double? value) {
-    assert(() {
-      printWarning(
-        'The window.debugOverrideDevicePixelRatio API is deprecated and will '
-        'be removed in a future release. Please use '
-        '`debugOverrideDevicePixelRatio` from `dart:ui_web` instead.',
-      );
-      return true;
-    }());
-    display.debugOverrideDevicePixelRatio(value);
-  }
-
-  // TODO(mdebbar): Deprecate this and remove it.
-  // https://github.com/flutter/flutter/issues/127395
-  ui.Size? get webOnlyDebugPhysicalSizeOverride {
-    assert(() {
-      printWarning(
-        'The webOnlyDebugPhysicalSizeOverride API is deprecated and will be '
-        'removed in a future release. Please use '
-        '`SingletonFlutterWindow.debugPhysicalSizeOverride` from `dart:ui_web` '
-        'instead.',
-      );
-      return true;
-    }());
-    return debugPhysicalSizeOverride;
-  }
-
-  // TODO(mdebbar): Deprecate this and remove it.
-  // https://github.com/flutter/flutter/issues/127395
-  set webOnlyDebugPhysicalSizeOverride(ui.Size? value) {
-    assert(() {
-      printWarning(
-        'The webOnlyDebugPhysicalSizeOverride API is deprecated and will be '
-        'removed in a future release. Please use '
-        '`SingletonFlutterWindow.debugPhysicalSizeOverride` from `dart:ui_web` '
-        'instead.',
-      );
-      return true;
-    }());
-    debugPhysicalSizeOverride = value;
-  }
 }
 
 /// The window singleton.

engine/src/flutter/lib/web_ui/lib/ui.dart

@@ -14,14 +14,12 @@ import 'dart:math' as math;
 import 'dart:typed_data';
 
 import 'src/engine.dart' as engine;
-import 'ui_web/src/ui_web.dart' as ui_web;
 
 part 'annotations.dart';
 part 'canvas.dart';
 part 'channel_buffers.dart';
 part 'compositing.dart';
 part 'geometry.dart';
-part 'initialization.dart';
 part 'key.dart';
 part 'lerp.dart';
 part 'math.dart';

engine/src/flutter/lib/web_ui/test/engine/profiler_test.dart

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:js_interop';
-
 import 'package:test/bootstrap/browser.dart';
 import 'package:test/test.dart';
 import 'package:ui/src/engine.dart';
@@ -11,9 +9,6 @@ import 'package:ui/ui_web/src/ui_web.dart' as ui_web;
 
 import '../common/spy.dart';
 
-@JS('window._flutter_internal_on_benchmark')
-external set jsBenchmarkValueCallback(JSAny? object);
-
 void main() {
   internalBootstrapBrowserTest(() => testMain);
 }
@@ -50,7 +45,6 @@ void _profilerTests() {
   });
 
   tearDown(() {
-    jsBenchmarkValueCallback = null;
     ui_web.benchmarkValueCallback = null;
     Profiler.isBenchmarkMode = false;
   });
@@ -79,102 +73,6 @@ void _profilerTests() {
     expect(() => Profiler.instance.benchmark('baz', 99.999), returnsNormally);
     expect(data, isEmpty);
   });
-
-  // TODO(mdebbar): Remove this group once the JS API is removed.
-  // https://github.com/flutter/flutter/issues/127395
-  group('[JS API]', () {
-    test('can listen to benchmarks', () {
-      final List<BenchmarkDatapoint> data = <BenchmarkDatapoint>[];
-      jsBenchmarkValueCallback =
-          (String name, double value) {
-            data.add((name, value));
-          }.toJS;
-
-      Profiler.instance.benchmark('foo', 123);
-      expect(warnings, hasLength(1));
-      expect(warnings.single, contains('deprecated'));
-      expect(warnings.single, contains('benchmarkValueCallback'));
-      expect(warnings.single, contains('dart:ui_web'));
-      warnings.clear();
-
-      expect(data, <BenchmarkDatapoint>[('foo', 123)]);
-      data.clear();
-
-      Profiler.instance.benchmark('bar', 0.0125);
-      expect(data, <BenchmarkDatapoint>[('bar', 0.0125)]);
-      data.clear();
-
-      // Remove listener and make sure nothing breaks and the data isn't being
-      // sent to the old callback anymore.
-      jsBenchmarkValueCallback = null;
-      expect(() => Profiler.instance.benchmark('baz', 99.999), returnsNormally);
-      expect(data, isEmpty);
-    });
-
-    test('throws on wrong listener type', () {
-      final List<BenchmarkDatapoint> data = <BenchmarkDatapoint>[];
-
-      // Wrong callback signature.
-      jsBenchmarkValueCallback =
-          (double value) {
-            data.add(('bad', value));
-          }.toJS;
-      expect(
-        () => Profiler.instance.benchmark('foo', 123),
-
-        // dart2js throws a NoSuchMethodError, dart2wasm throws a TypeError here.
-        // Just make sure it throws an error in this case.
-        throwsA(isA<Error>()),
-      );
-      expect(data, isEmpty);
-
-      // Not even a callback.
-      jsBenchmarkValueCallback = 'string'.toJS;
-      expect(
-        () => Profiler.instance.benchmark('foo', 123),
-        // dart2js throws a TypeError, while dart2wasm throws an explicit
-        // exception.
-        throwsA(anything),
-      );
-    });
-
-    test('can be combined with ui_web API', () {
-      final List<BenchmarkDatapoint> uiWebData = <BenchmarkDatapoint>[];
-      final List<BenchmarkDatapoint> jsData = <BenchmarkDatapoint>[];
-
-      ui_web.benchmarkValueCallback = (String name, double value) {
-        uiWebData.add((name, value));
-      };
-      jsBenchmarkValueCallback =
-          (String name, double value) {
-            jsData.add((name, value));
-          }.toJS;
-
-      Profiler.instance.benchmark('foo', 123);
-      expect(warnings, hasLength(1));
-      expect(warnings.single, contains('deprecated'));
-      expect(warnings.single, contains('benchmarkValueCallback'));
-      expect(warnings.single, contains('dart:ui_web'));
-      warnings.clear();
-
-      expect(uiWebData, <BenchmarkDatapoint>[('foo', 123)]);
-      expect(jsData, <BenchmarkDatapoint>[('foo', 123)]);
-      uiWebData.clear();
-      jsData.clear();
-
-      Profiler.instance.benchmark('bar', 0.0125);
-      expect(uiWebData, <BenchmarkDatapoint>[('bar', 0.0125)]);
-      expect(jsData, <BenchmarkDatapoint>[('bar', 0.0125)]);
-      uiWebData.clear();
-      jsData.clear();
-
-      ui_web.benchmarkValueCallback = null;
-      jsBenchmarkValueCallback = null;
-      expect(() => Profiler.instance.benchmark('baz', 99.999), returnsNormally);
-      expect(uiWebData, isEmpty);
-      expect(jsData, isEmpty);
-    });
-  });
 }
 
 void _instrumentationTests() {

engine/src/flutter/lib/web_ui/test/engine/surface/platform_view_test.dart

@@ -1,39 +0,0 @@
-// Copyright 2013 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.
-
-import 'dart:async';
-
-import 'package:test/bootstrap/browser.dart';
-import 'package:test/test.dart';
-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;
-
-void main() {
-  internalBootstrapBrowserTest(() => testMain);
-}
-
-Future<void> testMain() async {
-  test('importing platformViewRegistry from dart:ui is deprecated', () {
-    final void Function(String) oldPrintWarning = printWarning;
-
-    final List<String> warnings = <String>[];
-    printWarning = (String message) {
-      warnings.add(message);
-    };
-
-    // ignore: unnecessary_statements
-    ui_web.platformViewRegistry;
-    expect(warnings, isEmpty);
-
-    // ignore: unnecessary_statements
-    ui.platformViewRegistry;
-    expect(warnings, hasLength(1));
-    expect(warnings.single, contains('platformViewRegistry'));
-    expect(warnings.single, contains('deprecated'));
-    expect(warnings.single, contains('dart:ui_web'));
-
-    printWarning = oldPrintWarning;
-  });
-}