Remove suppressions related to App Notifications

tools/code_coverage/coverage_posix.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Generate and process code coverage.
 
 TODO(jrg): rename this from coverage_posix.py to coverage_all.py!
 
 Written for and tested on Mac, Linux, and Windows.  To use this script
@@ skipping 265 matching lines @@
          'LazyBackgroundPageApiTest.*',
          'IsolatedAppTest.*',
          'PanelMessagingTest.*',
          'GeolocationApiTest.*',
          'ClipboardApiTest.*',
          'ExecuteScriptApiTest.*',
          'CalculatorBrowserTest.*',
          'ChromeAppAPITest.*',
          'AppApiTest.*',
          'BlockedAppApiTest.*',
-         'AppNotificationTest.*',
          'AppBackgroundPageApiTest.*',
          'WebNavigationApiTest.*',
          'UsbApiTest.*',
          'TabCaptureApiTest.*',
          'SystemInfo*.*',
          'SyncFileSystemApiTest.*',
          'SocketApiTest.*',
          'SerialApiTest.*',
          'RecordApiTest.*',
          'PushMessagingApiTest.*',
@@ skipping 963 matching lines @@
   if options.trim:
     coverage.TrimTests()
   coverage.RunTests()
   if options.genhtml:
     coverage.GenerateHtml()
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())