ShaderMask on web for CupertinoContextMenu (#77864)

Now that ShaderMask works on web, enable it for CupertinoContextMenu and unskip relevant tests.

packages/flutter/lib/src/cupertino/context_menu.dart

@@ -5,7 +5,6 @@
 import 'dart:math' as math;
 import 'dart:ui' as ui;
 import 'package:flutter/gestures.dart' show kMinFlingVelocity, kLongPressTimeout;
-import 'package:flutter/foundation.dart' show kIsWeb;
 import 'package:flutter/scheduler.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
@@ -511,22 +510,17 @@ class _DecoyChildState extends State<_DecoyChild> with TickerProviderStateMixin
       : _mask.value;
     return Positioned.fromRect(
       rect: _rect.value!,
-      // TODO(justinmc): When ShaderMask is supported on web, remove this
-      // conditional and use ShaderMask everywhere.
-      // https://github.com/flutter/flutter/issues/52967.
-      child: kIsWeb
-          ? Container(key: _childGlobalKey, child: widget.child)
-          : ShaderMask(
-            key: _childGlobalKey,
-            shaderCallback: (Rect bounds) {
-              return LinearGradient(
-                begin: Alignment.topLeft,
-                end: Alignment.bottomRight,
-                colors: <Color>[color, color],
-              ).createShader(bounds);
-            },
-            child: widget.child,
-          ),
+      child: ShaderMask(
+        key: _childGlobalKey,
+        shaderCallback: (Rect bounds) {
+          return LinearGradient(
+            begin: Alignment.topLeft,
+            end: Alignment.bottomRight,
+            colors: <Color>[color, color],
+          ).createShader(bounds);
+        },
+        child: widget.child,
+      ),
     );
   }
 

packages/flutter/test/cupertino/context_menu_test.dart

@@ -4,7 +4,6 @@
 
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter/cupertino.dart';
-import 'package:flutter/foundation.dart' show kIsWeb;
 
 void main() {
   final TestWidgetsFlutterBinding binding =
@@ -104,10 +103,7 @@ void main() {
       Rect decoyChildRect = tester.getRect(_findDecoyChild(child));
       expect(childRect, equals(decoyChildRect));
 
-      // TODO(justinmc): When ShaderMask is supported on web, remove this
-      // conditional and just check for ShaderMask.
-      // https://github.com/flutter/flutter/issues/52967.
-      expect(find.byType(ShaderMask), kIsWeb ? findsNothing : findsOneWidget);
+      expect(find.byType(ShaderMask), findsOneWidget);
 
       // After a small delay, the _DecoyChild has begun to animate.
       await tester.pump(const Duration(milliseconds: 100));
@@ -125,7 +121,7 @@ void main() {
       await gesture.up();
       await tester.pumpAndSettle();
       expect(_findStatic(), findsOneWidget);
-    }, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
+    });
   });
 
   group('CupertinoContextMenu when open', () {
@@ -145,7 +141,7 @@ void main() {
       await tester.tapAt(const Offset(1.0, 1.0));
       await tester.pumpAndSettle();
       expect(_findStatic(), findsNothing);
-    }, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
+    });
 
     testWidgets('Can close CupertinoContextMenu by dragging down', (WidgetTester tester) async {
       final Widget child = _getChild();
@@ -187,7 +183,7 @@ void main() {
       await swipeGesture.up();
       await tester.pumpAndSettle();
       expect(_findStatic(), findsNothing);
-    }, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
+    });
 
     testWidgets('Can close CupertinoContextMenu by flinging down', (WidgetTester tester) async {
       final Widget child = _getChild();
@@ -212,7 +208,7 @@ void main() {
       await tester.fling(_findStaticChild(child), const Offset(0.0, 100.0), 1000.0);
       await tester.pumpAndSettle();
       expect(_findStatic(), findsNothing);
-    }, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
+    });
 
     testWidgets("Backdrop is added using ModalRoute's filter parameter", (WidgetTester tester) async {
       final Widget child = _getChild();
@@ -227,7 +223,7 @@ void main() {
       await tester.pumpAndSettle();
       expect(_findStatic(), findsOneWidget);
       expect(find.byType(BackdropFilter), findsOneWidget);
-    }, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
+    });
   });
 
   group("Open layout differs depending on child's position on screen", () {
@@ -302,7 +298,7 @@ void main() {
 
       // Set the screen back to its normal size.
       await binding.setSurfaceSize(const Size(800.0, 600.0));
-    }, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
+    });
 
     testWidgets('Landscape', (WidgetTester tester) async {
       // Pump a CupertinoContextMenu in the center of the screen and open it.
@@ -367,6 +363,6 @@ void main() {
       expect(find.byType(CupertinoContextMenuAction), findsOneWidget);
       final Offset right = tester.getTopLeft(find.byType(CupertinoContextMenuAction));
       expect(right.dx, lessThan(left.dx));
-    }, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
+    });
   });
 }

packages/flutter/test/widgets/shader_mask_test.dart

@@ -19,7 +19,7 @@ void main() {
   testWidgets('Can be constructed', (WidgetTester tester) async {
     const Widget child = SizedBox(width: 100.0, height: 100.0);
     await tester.pumpWidget(const ShaderMask(child: child, shaderCallback: createShader));
-  }, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
+  });
 
   testWidgets('Bounds rect includes offset', (WidgetTester tester) async {
     late Rect shaderBounds;
@@ -43,7 +43,7 @@ void main() {
 
     // The shader bounds rectangle should reflect the position of the centered SizedBox.
     expect(shaderBounds, equals(const Rect.fromLTWH(0.0, 0.0, 400.0, 400.0)));
-  }, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
+  });
 
 
   testWidgets('Bounds rect includes offset visual inspection', (WidgetTester tester) async {
@@ -106,5 +106,5 @@ void main() {
       find.byType(RepaintBoundary),
       matchesGoldenFile('shader_mask.bounds.matches_top_left.png'),
     );
-  }, skip: isBrowser); // https://github.com/flutter/flutter/issues/44152
+  });
 }