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

sdk/lib/_internal/pub_generated/test/lish/utils.dart

Index: sdk/lib/_internal/pub_generated/test/lish/utils.dart
diff --git a/sdk/lib/_internal/pub/test/lish/utils.dart b/sdk/lib/_internal/pub_generated/test/lish/utils.dart
similarity index 77%
copy from sdk/lib/_internal/pub/test/lish/utils.dart
copy to sdk/lib/_internal/pub_generated/test/lish/utils.dart
index 00127c1e1266754cf2644df5e69bcecb59d03f71..1342f8e92a84e4adeb78358fd0e0e1ead82ba0cd 100644
--- a/sdk/lib/_internal/pub/test/lish/utils.dart
+++ b/sdk/lib/_internal/pub_generated/test/lish/utils.dart
@@ -15,7 +15,8 @@ import '../../lib/src/io.dart';
 void handleUploadForm(ScheduledServer server, [Map body]) {
   server.handle('GET', '/api/packages/versions/new', (request) {
     return server.url.then((url) {
-      expect(request.headers,
+      expect(
+          request.headers,
           containsPair('authorization', 'Bearer access token'));
 
       if (body == null) {
@@ -28,8 +29,9 @@ void handleUploadForm(ScheduledServer server, [Map body]) {
         };
       }
 
-      return new shelf.Response.ok(JSON.encode(body),
-          headers: {'content-type': 'application/json'});
+      return new shelf.Response.ok(JSON.encode(body), headers: {
+        'content-type': 'application/json'
+      });
     });
   });
 }
@@ -38,9 +40,10 @@ void handleUpload(ScheduledServer server) {
   server.handle('POST', '/upload', (request) {
     // TODO(nweiz): Once a multipart/form-data parser in Dart exists, validate
     // that the request body is correctly formatted. See issue 6952.
-    return drainStream(request.read())
-        .then((_) => server.url)
-        .then((url) => new shelf.Response.found(url.resolve('/create')));
+    return drainStream(
+        request.read()).then(
+            (_) =>
+                server.url).then((url) => new shelf.Response.found(url.resolve('/create')));
   });
 }