Start pulling pub from its own repo.

sdk/lib/_internal/pub/test/dart2js/compiles_entrypoints_in_root_package_test.dart

-// 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("compiles Dart entrypoints in root package to JS", () {
-    // Dart2js can take a long time to compile dart code, so we increase the
-    // timeout to cope with that.
-    currentSchedule.timeout *= 3;
-
-    d.dir(appPath, [
-      d.appPubspec(),
-      d.dir('benchmark', [
-        d.file('file.dart', 'void main() => print("hello");'),
-        d.file('lib.dart', 'void foo() => print("hello");'),
-        d.dir('subdir', [
-          d.file('subfile.dart', 'void main() => print("ping");')
-        ])
-      ]),
-      d.dir('foo', [
-        d.file('file.dart', 'void main() => print("hello");'),
-        d.file('lib.dart', 'void foo() => print("hello");'),
-        d.dir('subdir', [
-          d.file('subfile.dart', 'void main() => print("ping");')
-        ])
-      ]),
-      d.dir('web', [
-        d.file('file.dart', 'void main() => print("hello");'),
-        d.file('lib.dart', 'void foo() => print("hello");'),
-        d.dir('subdir', [
-          d.file('subfile.dart', 'void main() => print("ping");')
-        ])
-      ])
-    ]).create();
-
-    schedulePub(args: ["build", "benchmark", "foo", "web"],
-        output: new RegExp(r'Built 6 files to "build".'));
-
-    d.dir(appPath, [
-      d.dir('build', [
-        d.dir('benchmark', [
-          d.matcherFile('file.dart.js', isNot(isEmpty)),
-          d.nothing('file.dart'),
-          d.nothing('lib.dart'),
-          d.dir('subdir', [
-            d.matcherFile('subfile.dart.js', isNot(isEmpty)),
-            d.nothing('subfile.dart')
-          ])
-        ]),
-        d.dir('foo', [
-          d.matcherFile('file.dart.js', isNot(isEmpty)),
-          d.nothing('file.dart'),
-          d.nothing('lib.dart'),
-          d.dir('subdir', [
-            d.matcherFile('subfile.dart.js', isNot(isEmpty)),
-            d.nothing('subfile.dart')
-          ])
-        ]),
-        d.dir('web', [
-          d.matcherFile('file.dart.js', isNot(isEmpty)),
-          d.nothing('file.dart'),
-          d.nothing('lib.dart'),
-          d.dir('subdir', [
-            d.matcherFile('subfile.dart.js', isNot(isEmpty)),
-            d.nothing('subfile.dart')
-          ])
-        ])
-      ])
-    ]).validate();
-  });
-}