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

sdk/lib/_internal/pub_generated/test/transformer/can_log_messages_test.dart

 // Copyright (c) 2013, 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 file.
 
 library pub_tests;
 
 import 'package:scheduled_test/scheduled_test.dart';
 import 'package:scheduled_test/scheduled_stream.dart';
 
 import '../../lib/src/exit_codes.dart' as exit_codes;
@@ skipping 56 matching lines @@
 main() {
   initConfig();
   // This intentionally tests barback 0.14.2 with both transformers, since it
   // supports both types of span.
   withBarbackVersions("<0.15.0", () => runTest(SOURCE_MAPS_TRANSFORMER));
   withBarbackVersions(">=0.14.2", () => runTest(SOURCE_SPAN_TRANSFORMER));
 }
 
 void runTest(String transformerText) {
   integration("can log messages", () {
-    d.dir(appPath, [
-      d.pubspec({
+    d.dir(appPath, [d.pubspec({
         "name": "myapp",
         "transformers": ["myapp/src/transformer"]
       }),
-      d.dir("lib", [d.dir("src", [
-        d.file("transformer.dart", transformerText)
-      ])]),
-      d.dir("web", [
-        d.file("foo.txt", "foo")
-      ])
-    ]).create();
+          d.dir("lib", [d.dir("src", [d.file("transformer.dart", transformerText)])]),
+          d.dir("web", [d.file("foo.txt", "foo")])]).create();
 
     createLockFile('myapp', pkg: ['barback']);
 
     var pub = startPub(args: ["build"]);
     pub.stdout.expect(startsWith("Loading source assets..."));
     pub.stdout.expect(consumeWhile(matches("Loading .* transformers...")));
     pub.stdout.expect(startsWith("Building myapp..."));
 
     pub.stdout.expect(emitsLines("""
 [Rewrite on myapp|web/foo.txt]:
 info!"""));
 
     pub.stderr.expect(emitsLines("""
 [Rewrite on myapp|web/foo.txt with input myapp|web/foo.foo]:
 Warning!
 [Rewrite on myapp|web/foo.txt]:"""));
 
     // The details of the analyzer's error message change pretty frequently,
     // so instead of validating the entire line, just look for a couple of
     // salient bits of information.
-    pub.stderr.expect(allOf([
-      contains("2"),                              // The line number.
-      contains("1"),                              // The column number.
-      contains("http://fake.com/not_real.dart"),  // The library.
-      contains("ERROR"),                          // That it's an error.
+    pub.stderr.expect(allOf([contains("2"), // The line number.
+      contains("1"), // The column number.
+      contains("http://fake.com/not_real.dart"), // The library.
+      contains("ERROR"), // That it's an error.
     ]));
 
     // In barback >=0.15.0, the span will point to the location where the error
     // occurred.
     pub.stderr.expect(allow(inOrder(["d", "^"])));
 
     pub.stderr.expect("Build failed.");
 
     pub.shouldExit(exit_codes.DATA);
   });
 }