Make getKeys, getValues getters (keys, values).

lib/compiler/implementation/lib/constant_map.dart

 // Copyright (c) 2012, 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 class has no constructor. This is on purpose since the instantiation
 // is shortcut by the compiler.
 class ConstantMap<V> implements Map<String, V> {
   final int length;
   // A constant map is backed by a JavaScript object.
   final _jsObject;
   final List<String> _keys;
 
   bool containsValue(V needle) {
-    return getValues().some((V value) => value == needle);
+    return values.some((V value) => value == needle);
   }
 
   bool containsKey(String key) {
     if (key == '__proto__') return false;
     return jsHasOwnProperty(_jsObject, key);
   }
 
   V operator [](String key) {
     if (!containsKey(key)) return null;
     return jsPropertyAccess(_jsObject, key);
   }
 
   void forEach(void f(String key, V value)) {
     _keys.forEach((String key) => f(key, this[key]));
   }
 
-  Collection<String> getKeys() => _keys;
+  Collection<String> get keys => _keys;
 
-  Collection<V> getValues() {
+  Collection<V> get values {
     List<V> result = <V>[];
     _keys.forEach((String key) => result.add(this[key]));
     return result;
   }
 
   bool get isEmpty => length == 0;
 
   String toString() => Maps.mapToString(this);
 
   _throwUnmodifiable() {
@@ skipping 13 matching lines @@
   bool containsKey(String key) {
     if (key == '__proto__') return true;
     return super.containsKey(key);
   }
 
   V operator [](String key) {
     if (key == '__proto__') return _protoValue;
     return super[key];
   }
 }