Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/build/copies_non_dart_files_to_build_test.dart

Index: sdk/lib/_internal/pub_generated/test/build/copies_non_dart_files_to_build_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/build/copies_non_dart_files_to_build_test.dart b/sdk/lib/_internal/pub_generated/test/build/copies_non_dart_files_to_build_test.dart
index 58c2e63e0a3419d94d8de28e8fcf79d8da6b2361..ab808b710e59430075c66f05498b6af7c52d9d79 100644
--- a/sdk/lib/_internal/pub_generated/test/build/copies_non_dart_files_to_build_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/build/copies_non_dart_files_to_build_test.dart
@@ -1,10 +1,21 @@
+// Copyright (c) 2013, 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 '../descriptor.dart' as d;
 import '../test_pub.dart';
+
 main() {
   initConfig();
+
   integration("copies non-Dart files to build/", () {
     servePackages((builder) => builder.serve("browser", "1.0.0"));
-    d.dir(appPath, [d.appPubspec({
+
+    d.dir(
+        appPath,
+        [// A browser dependency with no entrypoints shouldn't cause dart.js to be
+      // copied in.
+      d.appPubspec({
         "browser": "1.0.0"
       }),
           d.dir(
@@ -12,9 +23,11 @@ main() {
               [
                   d.file('file.txt', 'contents'),
                   d.dir('subdir', [d.file('subfile.txt', 'subcontents')])])]).create();
+
     schedulePub(
         args: ["build"],
         output: new RegExp(r'Built 2 files to "build".'));
+
     d.dir(
         appPath,
         [