Remove ArrayUtils

pkg/analyzer/lib/src/generated/element.dart

 // Copyright (c) 2014, 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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.element;
 
 import 'dart:collection';
@@ skipping 1268 matching lines @@
    * @param name the name of this element
    * @param nameOffset the offset of the name of this element in the file that contains the
    *          declaration of this element
    */
   ClassElementImpl(String name, int nameOffset) : super(name, nameOffset);
 
   @override
   accept(ElementVisitor visitor) => visitor.visitClassElement(this);
 
   /**
-   * Set the toolkit specific information objects attached to this class.
-   *
-   * @param toolkitObjects the toolkit objects attached to this class
+   * Add the given [toolkitObject] to the list of toolkit specific information
+   * objects attached to this class.
    */
   void addToolkitObjects(ToolkitObjectElement toolkitObject) {
     (toolkitObject as ToolkitObjectElementImpl).enclosingElement = this;
-    _toolkitObjects = ArrayUtils.add(_toolkitObjects, toolkitObject);
+    if (_toolkitObjects.isEmpty) {
+      // Convert from a non-growable list to a growable list.
+      _toolkitObjects = <ToolkitObjectElement>[];
+    }
+    _toolkitObjects.add(toolkitObject);
   }
 
   @override
   List<PropertyAccessorElement> get accessors => _accessors;
 
   @override
   List<InterfaceType> get allSupertypes {
     List<InterfaceType> list = new List<InterfaceType>();
     _collectAllSupertypes(list);
     return new List.from(list);
@@ skipping 10465 matching lines @@
     if (type is UnionType) {
       return (type as UnionTypeImpl).internalUnionTypeIsSuperTypeOf(this, visitedTypePairs);
     }
     // The only subtype relations that pertain to void are therefore:
     // void <: void (by reflexivity)
     // bottom <: void (as bottom is a subtype of all types).
     // void <: dynamic (as dynamic is a supertype of all types)
     return identical(type, this) || type.isDynamic;
   }
 }