Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/unknown_source_test.dart

Index: sdk/lib/_internal/pub_generated/test/unknown_source_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/unknown_source_test.dart b/sdk/lib/_internal/pub_generated/test/unknown_source_test.dart
index c8f7e0c72f9386510181acc0ecca518c38e7dd60..e760a66a497c290eaa06e23b9e9a7841e32f2c8c 100644
--- a/sdk/lib/_internal/pub_generated/test/unknown_source_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/unknown_source_test.dart
@@ -1,9 +1,17 @@
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS d.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 d.file.
+
 library pub_tests;
+
 import 'dart:convert';
+
 import 'descriptor.dart' as d;
 import 'test_pub.dart';
+
 main() {
   initConfig();
+
   forBothPubGetAndUpgrade((command) {
     integration('fails gracefully on a dependency from an unknown source', () {
       d.appDir({
@@ -11,10 +19,12 @@ main() {
           "bad": "foo"
         }
       }).create();
+
       pubCommand(
           command,
           error: 'Package myapp depends on foo from unknown source "bad".');
     });
+
     integration(
         'fails gracefully on transitive dependency from an unknown ' 'source',
         () {
@@ -25,22 +35,29 @@ main() {
             "bad": "bar"
           }
         })]).create();
+
       d.appDir({
         "foo": {
           "path": "../foo"
         }
       }).create();
+
       pubCommand(
           command,
           error: 'Package foo depends on bar from unknown source "bad".');
     });
+
     integration('ignores unknown source in lockfile', () {
       d.dir('foo', [d.libDir('foo'), d.libPubspec('foo', '0.0.1')]).create();
+
+      // Depend on "foo" from a valid source.
       d.dir(appPath, [d.appPubspec({
           "foo": {
             "path": "../foo"
           }
         })]).create();
+
+      // But lock it to a bad one.
       d.dir(appPath, [d.file("pubspec.lock", JSON.encode({
           'packages': {
             'foo': {
@@ -52,7 +69,10 @@ main() {
             }
           }
         }))]).create();
+
       pubCommand(command);
+
+      // Should upgrade to the new one.
       d.dir(
           packagesPath,
           [d.dir("foo", [d.file("foo.dart", 'main() => "foo";')])]).validate();