Remove unnecessary List creation

pkg/analyzer/lib/src/generated/constant.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.constant;
 
 import 'dart:collection';
@@ skipping 1177 matching lines @@
       return null;
     }
     DartType elementType = _typeProvider.dynamicType;
     if (node.typeArguments != null && node.typeArguments.arguments.length == 1) {
       DartType type = node.typeArguments.arguments[0].type;
       if (type != null) {
         elementType = type;
       }
     }
     InterfaceType listType = _typeProvider.listType.substitute4([elementType]);
-    return new DartObjectImpl(listType, new ListState(new List.from(elements)));
+    return new DartObjectImpl(listType, new ListState(elements));
   }
 
   @override
   DartObjectImpl visitMapLiteral(MapLiteral node) {
     if (node.constKeyword == null) {
       _errorReporter.reportErrorForNode(CompileTimeErrorCode.MISSING_CONST_IN_MAP_LITERAL, node, []);
       return null;
     }
     bool errorOccurred = false;
     HashMap<DartObjectImpl, DartObjectImpl> map = new HashMap<DartObjectImpl, DartObjectImpl>();
@@ skipping 3479 matching lines @@
 
   @override
   String get typeName => "Type";
 
   @override
   int get hashCode => _element == null ? 0 : _element.hashCode;
 
   @override
   String toString() => _element == null ? "-unknown-" : _element.name;
 }