Use scheduled_test for Pub tests.

utils/tests/pub/install/hosted/do_not_update_on_removed_constraints_test.dart

Index: utils/tests/pub/install/hosted/do_not_update_on_removed_constraints_test.dart
diff --git a/utils/tests/pub/install/hosted/do_not_update_on_removed_constraints_test.dart b/utils/tests/pub/install/hosted/do_not_update_on_removed_constraints_test.dart
index 9bd23486dc56ef30b045082506efcf6ea9986578..ba49e667463702135b159df8ca4d6d0fbb9a01a2 100644
--- a/utils/tests/pub/install/hosted/do_not_update_on_removed_constraints_test.dart
+++ b/utils/tests/pub/install/hosted/do_not_update_on_removed_constraints_test.dart
@@ -6,38 +6,39 @@ library pub_tests;
 
 import 'dart:io';
 
+import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
 
 main() {
   integration("doesn't update dependencies whose constraints have been "
       "removed", () {
     servePackages([
-      package("foo", "1.0.0", [dependency("shared-dep")]),
-      package("bar", "1.0.0", [dependency("shared-dep", "<2.0.0")]),
-      package("shared-dep", "1.0.0"),
-      package("shared-dep", "2.0.0")
+      packageMap("foo", "1.0.0", [dependencyMap("shared-dep")]),
+      packageMap("bar", "1.0.0", [dependencyMap("shared-dep", "<2.0.0")]),
+      packageMap("shared-dep", "1.0.0"),
+      packageMap("shared-dep", "2.0.0")
     ]);
 
-    appDir([dependency("foo"), dependency("bar")]).scheduleCreate();
+    d.appDir([dependencyMap("foo"), dependencyMap("bar")]).create();
 
     schedulePub(args: ['install'],
         output: new RegExp(r"Dependencies installed!$"));
 
-    packagesDir({
+    d.packagesDir({
       "foo": "1.0.0",
       "bar": "1.0.0",
       "shared-dep": "1.0.0"
-    }).scheduleValidate();
+    }).validate();
 
-    appDir([dependency("foo")]).scheduleCreate();
+    d.appDir([dependencyMap("foo")]).create();
 
     schedulePub(args: ['install'],
         output: new RegExp(r"Dependencies installed!$"));
 
-    packagesDir({
+    d.packagesDir({
       "foo": "1.0.0",
       "bar": null,
       "shared-dep": "1.0.0"
-    }).scheduleValidate();
+    }).validate();
   });
 }