Change status of indexeddb_3 test.

tests/html/html.status

 # 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.
 
 event_test: Skip  # Issue 1996
 webgl_1_test: Skip  # Issue 1495
 xmldocument_test: Skip  # XML in dart:html is incomplete
 xmlelement_test: Skip  # XML in dart:html is incomplete
 measurement_test: Pass, Fail  # Issue 1940
 
@@ skipping 151 matching lines @@
 
 [ $runtime == vm ]
 *: Skip
 
 # TODO(jmesserly): now that we have a bot, we need to set up Opera testing.
 [ $runtime == opera ]
 *: Skip
 
 [ $compiler == dart2js && $runtime == drt ]
 fileapi_test: Skip # Issue 3022
-indexeddb_3_test: Fail  # Issue 4648 - codegen bug.
 # Unknown error - should investigate.
 measurement_test: Fail
 htmloptionscollection_test: Fail # Issue 3813.
 unknownelement_test: Fail # Issue 4189
 
 [ $compiler == dart2js && $runtime == none ]
 *: Fail, Pass # TODO(ahe): Triage these tests.
 
 [ $compiler == dart2js ]
 transferables_test: Skip # until isInstance works in dart2js
@@ skipping 27 matching lines @@
 
 [ $compiler == dart2js && $runtime == chrome && $system == windows]
 css_test: Pass, Fail # Issue #2823
 fileapi_test: Skip # Issue 3022
 
 [ $compiler == dart2js && $runtime == ff && $system == windows]
 js_interop_2_test: Fail # Issue 4658.
 
 [ $compiler == dart2js && $runtime == drt && $system == macos ]
 indexeddb_2_test: Fail # Issue 3669.