Make getKeys, getValues getters (keys, values).

pkg/intl/test/date_time_format_test_core.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.
 
 /**
  * Tests the DateFormat library in dart. This file contains core tests that
  * are run regardless of where the locale data is found, so it doesn't expect to
  * be run on its own, but rather to be imported and run from another test file.
  */
 
@@ skipping 233 matching lines @@
         testRoundTripParsing(locale, aDate);
       }
       for (var hour in hours) {
         var aDate = new Date(2012, 1, 27, hour, 58, 59, 123);
         testRoundTripParsing(locale, aDate);
       }
     }
   });
 
   test('Patterns and symbols have the same coverage',() {
-    var patterns = new List.from(dateTimePatterns.getKeys());
+    var patterns = new List.from(dateTimePatterns.keys);
     var compare = (a, b) => a.compareTo(b);
     patterns.sort(compare);
     var symbols = allLocales();
     // Workaround for a dartj2 issue that treats the keys as immutable
     symbols = new List.from(symbols);
     symbols.sort(compare);
     for (var i = 0; i < patterns.length; i++)
       expect(patterns[i], equals(symbols[i]));
     expect(patterns.length, equals(symbols.length));
   });
@@ skipping 73 matching lines @@
 
   test('Test default format', () {
     var someDate = new Date(2012, 1, 27, 20, 58, 59, 1);
     var emptyFormat = new DateFormat(null, "en_US");
     var knownDefault = new DateFormat.yMMMMd("en_US").add_jms();
     var result = emptyFormat.format(someDate);
     var knownResult = knownDefault.format(someDate);
     expect(result, knownResult);
   });
 }