Move media/audio files into media namespace

media/audio/win/audio_low_latency_output_win.cc

Index: media/audio/win/audio_low_latency_output_win.cc
diff --git a/media/audio/win/audio_low_latency_output_win.cc b/media/audio/win/audio_low_latency_output_win.cc
index 120a3972af3337398a8063fbc5e091e3637b40a4..ec0fcd29270625dcfc66ca03b7b9d531754ed92a 100644
--- a/media/audio/win/audio_low_latency_output_win.cc
+++ b/media/audio/win/audio_low_latency_output_win.cc
@@ -16,6 +16,8 @@
 using base::win::ScopedComPtr;
 using base::win::ScopedCOMInitializer;
 
+namespace media {
+
 WASAPIAudioOutputStream::WASAPIAudioOutputStream(AudioManagerWin* manager,
                                                  const AudioParameters& params,
                                                  ERole device_role)
@@ -808,3 +810,5 @@ bool WASAPIAudioOutputStream::RestartRenderingUsingNewDefaultDevice() {
   restart_rendering_mode_ = false;
   return SUCCEEDED(hr);
 }
+
+}  // namespace media