Update linter engine to use driver (linter#743).

pkg/analyzer/test/src/lint/project_test.dart

Index: pkg/analyzer/test/src/lint/project_test.dart
diff --git a/pkg/analyzer/test/src/lint/project_test.dart b/pkg/analyzer/test/src/lint/project_test.dart
index 76282d141fbf559a6a771b1150cf8aa02f5b1821..5dcaa89d9f4876ed34052078913e9c5d9f1bb36e 100644
--- a/pkg/analyzer/test/src/lint/project_test.dart
+++ b/pkg/analyzer/test/src/lint/project_test.dart
@@ -16,8 +16,8 @@ defineTests() {
     group('basic', () {
       // TODO(brianwilkerson) These tests fail on the bots because the cwd is
       // not the same there as when we run tests locally.
-      group('cwd', () {
-        var project = new DartProject(null, null);
+      group('cwd', () async {
+        var project = await DartProject.create(null, null);
         test('name', () {
           expect(project.name, 'analyzer');
         });