Move media/audio files into media namespace

media/audio/win/wavein_input_win.h

Index: media/audio/win/wavein_input_win.h
diff --git a/media/audio/win/wavein_input_win.h b/media/audio/win/wavein_input_win.h
index b4418d86beb83a5a62b18504e0484ade88a8049b..82f1f559b7c878caaaf6f74a0951219d36f1d3fb 100644
--- a/media/audio/win/wavein_input_win.h
+++ b/media/audio/win/wavein_input_win.h
@@ -16,6 +16,8 @@
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_parameters.h"
 
+namespace media {
+
 class AudioManagerWin;
 
 class PCMWaveInAudioInputStream : public AudioInputStream {
@@ -117,4 +119,6 @@ class PCMWaveInAudioInputStream : public AudioInputStream {
   DISALLOW_COPY_AND_ASSIGN(PCMWaveInAudioInputStream);
 };
 
+}  // namespace media
+
 #endif  // MEDIA_AUDIO_WIN_WAVEIN_INPUT_WIN_H_