Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/global/activate/supports_version_solver_backtracking_test.dart

Index: sdk/lib/_internal/pub_generated/test/global/activate/supports_version_solver_backtracking_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/global/activate/supports_version_solver_backtracking_test.dart b/sdk/lib/_internal/pub_generated/test/global/activate/supports_version_solver_backtracking_test.dart
index 237bc05519873158bd8916958310c9206fda5299..1d75605802bb728f0deeccd0d1184b9535767d38 100644
--- a/sdk/lib/_internal/pub_generated/test/global/activate/supports_version_solver_backtracking_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/global/activate/supports_version_solver_backtracking_test.dart
@@ -1,6 +1,12 @@
+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// for details. 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:scheduled_test/scheduled_test.dart';
+
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
+
 main() {
   initConfig();
   integration('performs verison solver backtracking if necessary', () {
@@ -16,7 +22,11 @@ main() {
         }
       });
     });
+
     schedulePub(args: ["global", "activate", "foo"]);
+
+    // foo 1.2.0 won't be picked because its SDK constraint conflicts with the
+    // dummy SDK version 0.1.2+3.
     d.dir(
         cachePath,
         [