Move one test in an anonymous namespace.

media/audio/audio_low_latency_input_output_unittest.cc

Index: media/audio/audio_low_latency_input_output_unittest.cc
diff --git a/media/audio/audio_low_latency_input_output_unittest.cc b/media/audio/audio_low_latency_input_output_unittest.cc
index e4cb177cd76eeba4075d283b86f242eac244edc8..c94c3f627456566b9196396f51bb7df095ed59db 100644
--- a/media/audio/audio_low_latency_input_output_unittest.cc
+++ b/media/audio/audio_low_latency_input_output_unittest.cc
@@ -48,6 +48,8 @@
 
 namespace media {
 
+namespace {
+
 #if defined(USE_PULSEAUDIO)
 typedef AudioManagerPulse AudioManagerAnyPlatform;
 #elif defined(USE_ALSA)
@@ -452,4 +454,6 @@ TEST_F(AudioLowLatencyInputOutputTest, DISABLED_FullDuplexDelayMeasurement) {
   ais->Close();
 }
 
+}  // namespace
+
 }  // namespace media