Make sure we correctly dispatch custom events having the same names as unprefixed animations events

Tools/Scripts/webkitpy/layout_tests/port/base.py

 # Copyright (C) 2010 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 1549 matching lines @@
             VirtualTestSuite('threaded',
                              'animations',
                              ['--enable-threaded-compositing']),
             VirtualTestSuite('threaded',
                              'transitions',
                              ['--enable-threaded-compositing']),
             VirtualTestSuite('stable',
                              'webexposed',
                              ['--stable-release-mode']),
             VirtualTestSuite('stable',
+                             'animations-unprefixed',
+                             ['--stable-release-mode']),
+            VirtualTestSuite('stable',
                              'media/stable',
                              ['--stable-release-mode']),
             VirtualTestSuite('android',
                              'fullscreen',
                              ['--force-compositing-mode', '--enable-threaded-compositing',
                               '--enable-fixed-position-compositing', '--enable-accelerated-overflow-scroll', '--enable-accelerated-scrollable-frames',
                               '--enable-composited-scrolling-for-frames', '--enable-gesture-tap-highlight', '--enable-pinch',
                               '--enable-overlay-fullscreen-video', '--enable-overlay-scrollbars', '--enable-overscroll-notifications',
                               '--enable-fixed-layout', '--enable-viewport', '--disable-canvas-aa',
                               '--disable-composited-antialiasing', '--enable-accelerated-fixed-root-background']),
@@ skipping 178 matching lines @@
             if name.find('/') != -1:
                 _log.error("Virtual test suites names cannot contain /'s: %s" % name)
                 return
             self.name = 'virtual/' + name + '/' + base
         self.base = base
         self.args = args
         self.tests = tests or set()
 
     def __repr__(self):
         return "VirtualTestSuite('%s', '%s', %s)" % (self.name, self.base, self.args)