Revert 130180 - Move media/audio files into media namespace

media/audio/win/audio_manager_win.h

Index: media/audio/win/audio_manager_win.h
===================================================================
--- media/audio/win/audio_manager_win.h	(revision 130181)
+++ media/audio/win/audio_manager_win.h	(working copy)
@@ -13,8 +13,6 @@
 #include "base/gtest_prod_util.h"
 #include "media/audio/audio_manager_base.h"
 
-namespace media {
-
 // Windows implementation of the AudioManager singleton. This class is internal
 // to the audio output and only internal users can call methods not exposed by
 // the AudioManager class.
@@ -73,6 +71,4 @@
   DISALLOW_COPY_AND_ASSIGN(AudioManagerWin);
 };
 
-}  // namespace media
-
 #endif  // MEDIA_AUDIO_WIN_AUDIO_MANAGER_WIN_H_