Add:创建 flutter go web 版

packages/flutter_web/test/widgets/test_border.dart

@@ -0,0 +1,37 @@
+// Copyright 2016 The Chromium 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 'package:flutter_web/material.dart';
+
+typedef Logger = void Function(String caller);
+
+class TestBorder extends ShapeBorder {
+  const TestBorder(this.onLog) : assert(onLog != null);
+
+  final Logger onLog;
+
+  @override
+  EdgeInsetsGeometry get dimensions =>
+      const EdgeInsetsDirectional.only(start: 1.0);
+
+  @override
+  ShapeBorder scale(double t) => TestBorder(onLog);
+
+  @override
+  Path getInnerPath(Rect rect, {TextDirection textDirection}) {
+    onLog('getInnerPath $rect $textDirection');
+    return Path();
+  }
+
+  @override
+  Path getOuterPath(Rect rect, {TextDirection textDirection}) {
+    onLog('getOuterPath $rect $textDirection');
+    return Path();
+  }
+
+  @override
+  void paint(Canvas canvas, Rect rect, {TextDirection textDirection}) {
+    onLog('paint $rect $textDirection');
+  }
+}