Revert "Revert "Use native async/await support in pub.""

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

Index: sdk/lib/_internal/pub_generated/test/build/copies_browser_js_next_to_entrypoints_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/build/copies_browser_js_next_to_entrypoints_test.dart b/sdk/lib/_internal/pub_generated/test/build/copies_browser_js_next_to_entrypoints_test.dart
deleted file mode 100644
index d05ef15e7b41f4b1f38f2d0c6f8da9f49c9ab571..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub_generated/test/build/copies_browser_js_next_to_entrypoints_test.dart
+++ /dev/null
@@ -1,100 +0,0 @@
-// 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 'package:scheduled_test/scheduled_test.dart';
-
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-import 'utils.dart';
-
-main() {
-  initConfig();
-
-  integration("compiles dart.js and interop.js next to entrypoints", () {
-    // Dart2js can take a long time to compile dart code, so we increase the
-    // timeout to cope with that.
-    currentSchedule.timeout *= 3;
-
-    serveBrowserPackage();
-
-    d.dir(appPath, [d.appPubspec({
-        "browser": "1.0.0"
-      }),
-          d.dir(
-              'foo',
-              [
-                  d.file('file.dart', 'void main() => print("hello");'),
-                  d.dir(
-                      'subdir',
-                      [d.file('subfile.dart', 'void main() => print("subhello");')])]),
-          d.dir(
-              'web',
-              [
-                  d.file('file.dart', 'void main() => print("hello");'),
-                  d.dir(
-                      'subweb',
-                      [d.file('subfile.dart', 'void main() => print("subhello");')])])]).create();
-
-    pubGet();
-
-    schedulePub(
-        args: ["build", "foo", "web"],
-        output: new RegExp(r'Built 12 files to "build".'));
-
-    d.dir(
-        appPath,
-        [
-            d.dir(
-                'build',
-                [
-                    d.dir(
-                        'foo',
-                        [
-                            d.matcherFile('file.dart.js', isNot(isEmpty)),
-                            d.dir(
-                                'packages',
-                                [
-                                    d.dir(
-                                        'browser',
-                                        [
-                                            d.file('dart.js', 'contents of dart.js'),
-                                            d.file('interop.js', 'contents of interop.js')])]),
-                            d.dir(
-                                'subdir',
-                                [
-                                    d.dir(
-                                        'packages',
-                                        [
-                                            d.dir(
-                                                'browser',
-                                                [
-                                                    d.file('dart.js', 'contents of dart.js'),
-                                                    d.file('interop.js', 'contents of interop.js')])]),
-                                    d.matcherFile('subfile.dart.js', isNot(isEmpty)),])]),
-                    d.dir(
-                        'web',
-                        [
-                            d.matcherFile('file.dart.js', isNot(isEmpty)),
-                            d.dir(
-                                'packages',
-                                [
-                                    d.dir(
-                                        'browser',
-                                        [
-                                            d.file('dart.js', 'contents of dart.js'),
-                                            d.file('interop.js', 'contents of interop.js')])]),
-                            d.dir(
-                                'subweb',
-                                [
-                                    d.dir(
-                                        'packages',
-                                        [
-                                            d.dir(
-                                                'browser',
-                                                [
-                                                    d.file('dart.js', 'contents of dart.js'),
-                                                    d.file('interop.js', 'contents of interop.js')])]),
-                                    d.matcherFile('subfile.dart.js', isNot(isEmpty))])])])]).validate();
-  });
-}