Add CoreClasses

tests/compiler/dart2js/mock_compiler.dart

 // Copyright (c) 2012, 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.
 
 library mock_compiler;
 
 import "package:expect/expect.dart";
 import 'dart:async';
 import 'dart:collection';
 
@@ skipping 139 matching lines @@
   Future<Uri> init([String mainSource = ""]) {
     Uri uri = new Uri(scheme: "mock");
     registerSource(uri, mainSource);
     return libraryLoader.loadLibrary(uri)
         .then((LibraryElement library) {
       mainApp = library;
       // We need to make sure the Object class is resolved. When registering a
       // dynamic invocation the ArgumentTypesRegistry eventually iterates over
       // the interfaces of the Object class which would be 'null' if the class
       // wasn't resolved.
-      objectClass.ensureResolved(resolution);
+      coreClasses.objectClass.ensureResolved(resolution);
     }).then((_) => uri);
   }
 
   Future runCompiler(Uri uri, [String mainSource = ""]) {
     return init(mainSource).then((Uri mainUri) {
       return super.runCompiler(uri == null ? mainUri : uri);
     }).then((result) {
       if (expectedErrors != null &&
           expectedErrors != errors.length) {
         throw "unexpected error during compilation ${errors}";
@@ skipping 297 matching lines @@
       trustTypeAnnotations: trustTypeAnnotations,
       enableTypeAssertions: enableTypeAssertions,
       enableUserAssertions: enableUserAssertions,
       expectedErrors: expectedErrors,
       expectedWarnings: expectedWarnings,
       outputProvider: outputProvider);
   compiler.registerSource(uri, code);
   compiler.diagnosticHandler = createHandler(compiler, code);
   return compiler;
 }