Rename WebImage to OptionalImage to avoid name conflict

dashboard/lib/widgets/commit_author_avatar.dart

@@ -5,7 +5,7 @@
 import 'package:flutter/material.dart';
 
 import '../model/commit.pb.dart';
-import 'web_image.dart';
+import 'optional_image.dart';
 
 /// Shows the appropriate avatar for a [Commit]'s author.
 ///
@@ -45,7 +45,7 @@ class CommitAuthorAvatar extends StatelessWidget {
       ),
     );
 
-    return WebImage(
+    return OptionalImage(
       imageUrl: commit!.authorAvatarUrl,
       placeholder: avatar,
     );

dashboard/lib/widgets/web_image.dart → dashboard/lib/widgets/optional_image.dart

@@ -11,8 +11,8 @@ import 'package:flutter/widgets.dart';
 ///
 /// This bypasses network image provider when testing to not surface the
 /// HTTP errors in tests by default.
-class WebImage extends StatelessWidget {
-  const WebImage({
+class OptionalImage extends StatelessWidget {
+  const OptionalImage({
     super.key,
     bool? enabled,
     this.imageUrl,

dashboard/test/widgets/optional_image_test.dart

@@ -0,0 +1,24 @@
+// Copyright 2019 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 'package:flutter_dashboard/widgets/optional_image.dart';
+
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  testWidgets('OptionalImage.enabled', (WidgetTester tester) async {
+    expect(
+      const OptionalImage(imageUrl: 'url').enabled,
+      isFalse,
+    ); // because this is a test
+    expect(
+      const OptionalImage(imageUrl: 'url', enabled: false).enabled,
+      isFalse,
+    );
+    expect(
+      const OptionalImage(imageUrl: 'url', enabled: true).enabled,
+      isTrue,
+    );
+  });
+}