Don't call dinvoke on Object methods

lib/src/checker/dart_sdk.dart

 // Copyright (c) 2015, 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.
 
 /// Common logic needed to provide a Dart SDK to the analyzer's resolver. This
 /// includes logic to determine where the sdk is located in the filesystem, and
 /// definitions to provide mock sdks.
 library dev_compiler.src.checker.dart_sdk;
 
 import 'package:analyzer/src/generated/engine.dart';
@@ skipping 92 matching lines @@
   //   * types we use via our smoke queries, including HtmlElement and
   //     types from `_typeHandlers` (deserialize.dart)
   //   * types that are used internally by the resolver (see
   //   _initializeFrom in resolver.dart).
   'dart:core': '''
         library dart.core;
 
         void print(Object o) {}
 
         class Object {
+          int get hashCode {}
+          Type get runtimeType {}
           String toString(){}
         }
         class Function {}
         class StackTrace {}
         class Symbol {}
         class Type {}
 
         class String {}
         class bool {}
         class num {
@@ skipping 29 matching lines @@
         class Future<T> {
           Future then(callback) {}
         }
         class Stream<T> {}
   ''',
   'dart:html': '''
         library dart.html;
         class HtmlElement {}
         ''',
 };