Added unit tests for the Dart Chrome.* API wrappers.

tools/json_schema_compiler/dart_test/empty_type.dart

+// 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.
+
+// Generated from namespace: empty_type
+
+part of chrome;
+
+/**
+ * Types
+ */
+
+class Empty_typeEmptyType extends ChromeObject {
+  /*
+   * Public constructor
+   */
+  Empty_typeEmptyType({}) {
+  }
+
+  /*
+   * Private constructor
+   */
+  Empty_typeEmptyType._proxy(_jsObject) : super._proxy(_jsObject);
+}
+
+/**
+ * Functions
+ */
+
+class API_empty_type {
+  /*
+   * API connection
+   */
+  Object _jsObject;
+  API_empty_type(this._jsObject) {
+  }
+}