Add VM internal Dart class 'ClassID' used to manage class-ids of known classes. Next CL: add consta…

runtime/lib/growable_array.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.
 
 class _GrowableList<T> implements List<T> {
-  static final int _classId = (new _GrowableList(0))._cid;
+  static final int _classId = ClassID.getID(new _GrowableList(0));
 
   void insert(int index, T element) {
     if (index < 0 || index > length) {
       throw new RangeError.range(index, 0, length);
     }
     if (index == this.length) {
       add(element);
       return;
     }
     int oldLength = this.length;
@@ skipping 323 matching lines @@
   }
 
   Set<T> toSet() {
     return new Set<T>.from(this);
   }
 
   Map<int, T> asMap() {
     return IterableMixinWorkaround.asMapList(this);
   }
 }