Enable perf_av pyauto tests on windows bot.

chrome/test/functional/PYAUTO_TESTS

 # 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.
 #
 # This file lists the pyauto tests that run as a part of the functional test
 # suite.
 #
 # Tests can be enabled on a per-platform basis. Tests not listed here will
 # not be run.
 #
@@ skipping 794 matching lines @@
   # HTML5 media performance tests.
   'AV_PERF': {
      'linux': [
        'media.audio_latency_perf',
        'media.media_constrained_network_perf',
        'media.media_scrub_perf',
        'media.media_seek_perf',
        'media.media_stat_perf',
        'media.mixed_audio_latency_perf',
      ],
+     'win': [
+       'media.audio_latency_perf',
+       'media.media_constrained_network_perf',
+       'media.media_scrub_perf',
+       'media.media_seek_perf',
+       'media.media_stat_perf',
+       'media.mixed_audio_latency_perf',
+     ],
   },
 
   # WebRTC MediaStream tests. Requires webcam and audio device to be present on
   # the test machine.
   'WEBRTC': {
     'all': [
       'media_stream_infobar',
       'webrtc_brutality_test',
       'webrtc_call',
       # crbug.com/140465
@@ skipping 49 matching lines @@
       '-search_engines.SearchEnginesTest.testDiscoverSearchEngine',
       '-ntp.NTPTest.testUninstallApp',
       '-ntp.NTPTest.testLaunchAppWithDefaultSettings',
       '-ntp.NTPTest.testLaunchAppRegularTab',
       '-ntp.NTPTest.testLaunchAppPinnedTab',
       '-ntp.NTPTest.testGetAppsWhenInstallApp',
       '-ntp.NTPTest.testLaunchAppNewWindow',
     ],
   },
 }