Make integration tests a bit cleaner.

utils/tests/pub/install/git/check_out_branch_test.dart

Index: utils/tests/pub/install/git/check_out_branch_test.dart
diff --git a/utils/tests/pub/install/git/check_out_branch_test.dart b/utils/tests/pub/install/git/check_out_branch_test.dart
index 4516f9ccd1e59095013d7a7083a23b81e0bb1620..42e65bd51b762fef54af93b252874f5895dad174 100644
--- a/utils/tests/pub/install/git/check_out_branch_test.dart
+++ b/utils/tests/pub/install/git/check_out_branch_test.dart
@@ -7,10 +7,9 @@ library pub_tests;
 import 'dart:io';
 
 import '../../test_pub.dart';
-import '../../../../../pkg/unittest/lib/unittest.dart';
 
 main() {
-  test('checks out a package at a specific branch from Git', () {
+  integration('checks out a package at a specific branch from Git', () {
     ensureGit();
 
     var repo = git('foo.git', [
@@ -35,7 +34,5 @@ main() {
         file('foo.dart', 'main() => "foo 1";')
       ])
     ]).scheduleValidate();
-
-    run();
   });
 }