[web] Migrate framework to fully use package:web (#128901)

Remove `dom.dart`'s JS interop definitions in favor of `package:web`.

Part of flutter/flutter#113402
Part of flutter/flutter#127030

Author: mdebbar

packages/flutter/lib/src/foundation/_platform_web.dart

@@ -4,7 +4,7 @@
 
 import 'dart:ui' as ui;
 
-import '../services/dom.dart';
+import 'package:web/web.dart' as web;
 
 import 'platform.dart' as platform;
 
@@ -40,7 +40,7 @@ final platform.TargetPlatform? _testPlatform = () {
 // 0.20ms. As `defaultTargetPlatform` is routinely called dozens of times per
 // frame this value should be cached.
 final platform.TargetPlatform _browserPlatform = () {
-  final String navigatorPlatform = domWindow.navigator.platform?.toLowerCase() ?? '';
+  final String navigatorPlatform = web.window.navigator.platform.toLowerCase();
   if (navigatorPlatform.startsWith('mac')) {
     return platform.TargetPlatform.macOS;
   }
@@ -60,7 +60,7 @@ final platform.TargetPlatform _browserPlatform = () {
   // indicates that a device has a "fine pointer" (mouse) as the primary
   // pointing device, then we'll assume desktop linux, and otherwise we'll
   // assume Android.
-  if (domWindow.matchMedia('only screen and (pointer: fine)').matches) {
+  if (web.window.matchMedia('only screen and (pointer: fine)').matches) {
     return platform.TargetPlatform.linux;
   }
   return platform.TargetPlatform.android;

packages/flutter/lib/src/painting/_network_image_web.dart

@@ -7,17 +7,17 @@ import 'dart:js_interop';
 import 'dart:ui' as ui;
 
 import 'package:flutter/foundation.dart';
+import 'package:web/web.dart' as web;
 
-import '../services/dom.dart';
 import 'image_provider.dart' as image_provider;
 import 'image_stream.dart';
 
 /// Creates a type for an overridable factory function for testing purposes.
-typedef HttpRequestFactory = DomXMLHttpRequest Function();
+typedef HttpRequestFactory = web.XMLHttpRequest Function();
 
 /// Default HTTP client.
-DomXMLHttpRequest _httpClient() {
-  return DomXMLHttpRequest();
+web.XMLHttpRequest _httpClient() {
+  return web.XMLHttpRequest();
 }
 
 /// Creates an overridable factory function.
@@ -135,9 +135,9 @@ class NetworkImage
     // We use a different method when headers are set because the
     // `ui.webOnlyInstantiateImageCodecFromUrl` method is not capable of handling headers.
     if (isCanvasKit || containsNetworkImageHeaders) {
-      final Completer<DomXMLHttpRequest> completer =
-          Completer<DomXMLHttpRequest>();
-      final DomXMLHttpRequest request = httpRequestFactory();
+      final Completer<web.XMLHttpRequest> completer =
+          Completer<web.XMLHttpRequest>();
+      final web.XMLHttpRequest request = httpRequestFactory();
 
       request.open('GET', key.url, true);
       request.responseType = 'arraybuffer';
@@ -147,9 +147,9 @@ class NetworkImage
         });
       }
 
-      request.addEventListener('load', createDomEventListener((DomEvent e) {
-        final int? status = request.status;
-        final bool accepted = status! >= 200 && status < 300;
+      request.addEventListener('load', (web.Event e) {
+        final int status = request.status;
+        final bool accepted = status >= 200 && status < 300;
         final bool fileUri = status == 0; // file:// URIs have status of 0.
         final bool notModified = status == 304;
         final bool unknownRedirect = status > 307 && status < 400;
@@ -161,12 +161,11 @@ class NetworkImage
         } else {
           completer.completeError(e);
           throw image_provider.NetworkImageLoadException(
-              statusCode: request.status ?? 400, uri: resolved);
+              statusCode: status, uri: resolved);
         }
-      }));
+      }.toJS);
 
-      request.addEventListener('error',
-          createDomEventListener(completer.completeError));
+      request.addEventListener('error', completer.completeError.toJS);
 
       request.send();
 
@@ -176,7 +175,7 @@ class NetworkImage
 
       if (bytes.lengthInBytes == 0) {
         throw image_provider.NetworkImageLoadException(
-            statusCode: request.status!, uri: resolved);
+            statusCode: request.status, uri: resolved);
       }
 
       if (decode != null) {