Fix some test suppressions for Chrome 60

tests/lib_strong/html/indexeddb_1_test.dart

 library IndexedDB1Test;
 
 import 'package:unittest/unittest.dart';
 import 'package:unittest/html_individual_config.dart';
 import 'dart:async';
 import 'dart:html' as html;
 import 'dart:math' as math;
 import 'dart:indexed_db' as idb;
 
 const String STORE_NAME = 'TEST';
@@ skipping 147 matching lines @@
 
   // Test that indexed_db is properly flagged as supported or not.
   // Note that the rest of the indexed_db tests assume that this has been
   // checked.
   group('supported', () {
     test('supported', () {
       expect(idb.IdbFactory.supported, true);
     });
   });
 
-  group('supportsDatabaseNames', () {
-    test('supported', () {
-      expect(html.window.indexedDB.supportsDatabaseNames, isTrue);
-    });
-  });
-
   group('functional', () {
     test('throws when unsupported', () {
       var expectation = idb.IdbFactory.supported ? returnsNormally : throws;
 
       expect(() {
         var db = html.window.indexedDB;
         db.open('random_db');
       }, expectation);
     });
 
     // Don't bother with these tests if it's unsupported.
     if (idb.IdbFactory.supported) {
       test('upgrade', testUpgrade);
       group('dynamic', () {
         testTypes(testReadWrite);
       });
       group('typed', () {
         testTypes(testReadWriteTyped);
       });
     }
   });
 }