[framework] re-enable skipped impeller goldens. (flutter#166354)

Fixes flutter#143616

Maybe. Lets see if its stable.

Update: I've run this a few times and it seems stable.

Author: Jonah Williams

packages/flutter/test/cupertino/date_picker_test.dart

@@ -17,8 +17,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter_test/flutter_test.dart';
 
-import '../impeller_test_helpers.dart';
-
 // TODO(yjbanov): on the web text rendered with perspective produces flaky goldens: https://github.com/flutter/flutter/issues/110785
 final bool skipPerspectiveTextGoldens = isBrowser && isSkwasm;
 
@@ -1611,7 +1609,7 @@ void main() {
           matchesGoldenFile('date_picker_test.datetime.drag.png'),
         );
       }
-    }, skip: impellerEnabled); // https://github.com/flutter/flutter/issues/143616
+    });
 
     testWidgets('DatePicker displays the date in correct order', (WidgetTester tester) async {
       await tester.pumpWidget(
@@ -1761,7 +1759,7 @@ void main() {
         matchesGoldenFile('timer_picker_test.datetime.drag.png'),
       );
     }
-  }, skip: impellerEnabled); // https://github.com/flutter/flutter/issues/143616
+  });
 
   testWidgets('TimerPicker only changes hour label after scrolling stops', (
     WidgetTester tester,

packages/flutter/test/widgets/color_filter_test.dart

@@ -12,8 +12,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter_test/flutter_test.dart';
 
-import '../impeller_test_helpers.dart';
-
 void main() {
   testWidgets('Color filter - red', (WidgetTester tester) async {
     await tester.pumpWidget(
@@ -56,7 +54,7 @@ void main() {
       ),
     );
     await expectLater(find.byType(ColorFiltered), matchesGoldenFile('color_filter_sepia.png'));
-  }, skip: impellerEnabled); // https://github.com/flutter/flutter/issues/143616
+  });
 
   testWidgets('Color filter - reuses its layer', (WidgetTester tester) async {
     Future<void> pumpWithColor(Color color) async {

packages/flutter/test/widgets/selectable_text_test.dart

@@ -20,7 +20,6 @@ import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
-import '../impeller_test_helpers.dart';
 import '../widgets/clipboard_utils.dart';
 import '../widgets/editable_text_utils.dart' show textOffsetToPosition;
 import '../widgets/semantics_tester.dart';
@@ -5267,7 +5266,7 @@ void main() {
       find.byType(MaterialApp),
       matchesGoldenFile('selectable_text_golden.TextSelectionStyle.1.png'),
     );
-  }, skip: impellerEnabled); // https://github.com/flutter/flutter/issues/143616
+  });
 
   testWidgets('text selection style 2', (WidgetTester tester) async {
     await tester.pumpWidget(
@@ -5304,7 +5303,7 @@ void main() {
       find.byType(MaterialApp),
       matchesGoldenFile('selectable_text_golden.TextSelectionStyle.2.png'),
     );
-  }, skip: impellerEnabled); // https://github.com/flutter/flutter/issues/143616
+  });
 
   testWidgets('keeps alive when has focus', (WidgetTester tester) async {
     await tester.pumpWidget(

packages/flutter/test/widgets/shader_mask_test.dart

@@ -10,8 +10,6 @@ library;
 import 'package:flutter/widgets.dart';
 import 'package:flutter_test/flutter_test.dart';
 
-import '../impeller_test_helpers.dart';
-
 Shader createShader(Rect bounds) {
   return const LinearGradient(
     begin: Alignment.topCenter,
@@ -102,5 +100,5 @@ void main() {
       find.byType(RepaintBoundary),
       matchesGoldenFile('shader_mask.bounds.matches_top_left.png'),
     );
-  }, skip: impellerEnabled); // https://github.com/flutter/flutter/issues/144555
+  });
 }