Make hashCode a getter and not a method.

lib/compiler/implementation/scanner/keyword.dart

 // Copyright (c) 2011, 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.
 
 /**
  * A keyword in the Dart programming language.
  */
 class Keyword implements SourceString {
   static const List<Keyword> values = const <Keyword> [
       const Keyword("assert"),
@@ skipping 76 matching lines @@
                  PrecedenceInfo this.info: KEYWORD_INFO});
 
   static Map<String, Keyword> computeKeywordMap() {
     Map<String, Keyword> result = new LinkedHashMap<String, Keyword>();
     for (Keyword keyword in values) {
       result[keyword.syntax] = keyword;
     }
     return result;
   }
 
-  int hashCode() => syntax.hashCode();
+  int get hashCode => syntax.hashCode;
 
   bool operator ==(other) {
     return other is SourceString && toString() == other.slowToString();
   }
 
   Iterator<int> iterator() => new StringCodeIterator(syntax);
 
   void printOn(StringBuffer sb) {
     sb.add(syntax);
   }
@@ skipping 114 matching lines @@
   final Keyword keyword;
 
   LeafKeywordState(String syntax) : keyword = Keyword.keywords[syntax];
 
   bool isLeaf() => true;
 
   KeywordState next(int c) => null;
 
   String toString() => keyword.syntax;
 }