Re-enables AudioDeviceTest.StartStopPlayout on Android

webrtc/modules/audio_device/android/audio_device_unittest.cc

Index: webrtc/modules/audio_device/android/audio_device_unittest.cc
diff --git a/webrtc/modules/audio_device/android/audio_device_unittest.cc b/webrtc/modules/audio_device/android/audio_device_unittest.cc
index 6747f9cc6d5aeb2c55bb9d5a1a6e56ea5df81bd2..98e89c13c2bd77cd4f689d3b95f4ef2bb7334d93 100644
--- a/webrtc/modules/audio_device/android/audio_device_unittest.cc
+++ b/webrtc/modules/audio_device/android/audio_device_unittest.cc
@@ -816,9 +816,7 @@ TEST_F(AudioDeviceTest, SetSpeakerVolumeActuallySetsVolume) {
 
 // Tests that playout can be initiated, started and stopped. No audio callback
 // is registered in this test.
-// Flaky on our trybots makes this test unusable.
-// https://code.google.com/p/webrtc/issues/detail?id=5046
-TEST_F(AudioDeviceTest, DISABLED_StartStopPlayout) {
+TEST_F(AudioDeviceTest, StartStopPlayout) {
   StartPlayout();
   StopPlayout();
   StartPlayout();