Make constant lists immutable

pkg/analyzer/lib/src/generated/html.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.html;
 
 import 'dart:collection';
@@ skipping 1282 matching lines @@
     // no children to visit
   }
 }
 
 /**
  * Instances of the class `XmlExpression` represent an abstract expression embedded into
  * [XmlNode].
  */
 abstract class XmlExpression {
   /**
-   * An empty array of expressions.
+   * An empty list of expressions.
    */
-  static List<XmlExpression> EMPTY_ARRAY = new List<XmlExpression>(0);
+  static const List<XmlExpression> EMPTY_ARRAY = const <XmlExpression>[];
 
   /**
    * Check if the given offset belongs to the expression's source range.
    */
   bool contains(int offset) => this.offset <= offset && offset < end;
 
   /**
    * Return the offset of the character immediately following the last character of this
    * expression's source range. This is equivalent to `getOffset() + getLength()`.
    *
@@ skipping 733 matching lines @@
  */
 abstract class XmlVisitor<R> {
   R visitHtmlScriptTagNode(HtmlScriptTagNode node);
 
   R visitHtmlUnit(HtmlUnit htmlUnit);
 
   R visitXmlAttributeNode(XmlAttributeNode xmlAttributeNode);
 
   R visitXmlTagNode(XmlTagNode xmlTagNode);
 }