Find “browser” dependency even if it’s dev or override.

sdk/lib/_internal/pub/test/build/copies_browser_js_next_to_entrypoints_test.dart

Index: sdk/lib/_internal/pub/test/build/copies_browser_js_next_to_entrypoints_test.dart
diff --git a/sdk/lib/_internal/pub/test/build/copies_browser_js_next_to_entrypoints_test.dart b/sdk/lib/_internal/pub/test/build/copies_browser_js_next_to_entrypoints_test.dart
index f8bf83d37189af2b247f291bd99816713c0cefbc..e005f30190d8d1c576c5e9d2f2810f2a8dc82533 100644
--- a/sdk/lib/_internal/pub/test/build/copies_browser_js_next_to_entrypoints_test.dart
+++ b/sdk/lib/_internal/pub/test/build/copies_browser_js_next_to_entrypoints_test.dart
@@ -8,6 +8,7 @@ import 'package:scheduled_test/scheduled_test.dart';
 
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
+import 'utils.dart';
 
 main() {
   initConfig();
@@ -17,36 +18,7 @@ main() {
     // timeout to cope with that.
     currentSchedule.timeout *= 3;
 
-    serve([
-      d.dir('api', [
-        d.dir('packages', [
-          d.file('browser', JSON.encode({
-            'versions': [packageVersionApiMap(packageMap('browser', '1.0.0'))]
-          })),
-          d.dir('browser', [
-            d.dir('versions', [
-              d.file('1.0.0', JSON.encode(
-                  packageVersionApiMap(
-                      packageMap('browser', '1.0.0'),
-                      full: true)))
-            ])
-          ])
-        ])
-      ]),
-      d.dir('packages', [
-        d.dir('browser', [
-          d.dir('versions', [
-            d.tar('1.0.0.tar.gz', [
-              d.file('pubspec.yaml', yaml(packageMap("browser", "1.0.0"))),
-              d.dir('lib', [
-                d.file('dart.js', 'contents of dart.js'),
-                d.file('interop.js', 'contents of interop.js')
-              ])
-            ])
-          ])
-        ])
-      ])
-    ]);
+    serveBrowserPackage();
 
     d.dir(appPath, [
       d.appPubspec({"browser": "1.0.0"}),