Changed LinkedHashSet to Set and LinkedHashMap to Map.

sdk/lib/_internal/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.
 
 part of scanner;
 
 /**
  * A keyword in the Dart programming language.
  */
 class Keyword extends IterableBase<int> implements SourceString {
@@ skipping 69 matching lines @@
     }
     return _keywords;
   }
 
   const Keyword(String this.syntax,
                 {bool this.isPseudo: false,
                  bool this.isBuiltIn: false,
                  PrecedenceInfo this.info: KEYWORD_INFO});
 
   static Map<String, Keyword> computeKeywordMap() {
-    Map<String, Keyword> result = new LinkedHashMap<String, Keyword>();
+    Map<String, Keyword> result = new Map<String, Keyword>();
     for (Keyword keyword in values) {
       result[keyword.syntax] = keyword;
     }
     return result;
   }
 
   int get hashCode => syntax.hashCode;
 
   bool operator ==(other) {
     return other is SourceString && toString() == other.slowToString();
@@ skipping 121 matching lines @@
  */
 class LeafKeywordState extends KeywordState {
   LeafKeywordState(String syntax) : super(Keyword.keywords[syntax]);
 
   bool isLeaf() => true;
 
   KeywordState next(int c) => null;
 
   String toString() => keyword.syntax;
 }