Remove --disable-audio from tests.

chrome/test/functional/media/media_basic_playback.py

Index: chrome/test/functional/media/media_basic_playback.py
diff --git a/chrome/test/functional/media/media_basic_playback.py b/chrome/test/functional/media/media_basic_playback.py
index a58c2c8c4795340df06ecdad02be19911989127d..e70b26275c30f1598645db169a18abdecda4a0fb 100755
--- a/chrome/test/functional/media/media_basic_playback.py
+++ b/chrome/test/functional/media/media_basic_playback.py
@@ -35,13 +35,6 @@ _EXPECTED_EVENTS_n = [('abort', 1), ('emptied', 1)] + _EXPECTED_EVENTS_0
 class MediaBasicPlaybackTest(pyauto.PyUITest):
   """PyAuto test container.  See file doc string for more information."""
 
-  def ExtraChromeFlags(self):
-    """Run with --disable-audio to avoid issues with bots with no audio output.
-
-    TODO(shadi): Remove extra flag once issue (crbug.com/120749) is resolved.
-    """
-    return pyauto.PyUITest.ExtraChromeFlags(self) + ['--disable-audio']
-
   def testBasicPlaybackMatrix(self):
     """Launches HTML test which plays each video until end, seeks, and replays.