Move media/audio files into media namespace

media/audio/openbsd/audio_manager_openbsd.h

Index: media/audio/openbsd/audio_manager_openbsd.h
diff --git a/media/audio/openbsd/audio_manager_openbsd.h b/media/audio/openbsd/audio_manager_openbsd.h
index 86b56c0fe001c7d34310c009257ccb46c514805f..16355719e586d6811a3605fbe99d02c2e704f7b3 100644
--- a/media/audio/openbsd/audio_manager_openbsd.h
+++ b/media/audio/openbsd/audio_manager_openbsd.h
@@ -10,6 +10,8 @@
 #include "base/compiler_specific.h"
 #include "media/audio/audio_manager_base.h"
 
+namespace media {
+
 class MEDIA_EXPORT AudioManagerOpenBSD : public AudioManagerBase {
  public:
   AudioManagerOpenBSD();
@@ -43,4 +45,6 @@ class MEDIA_EXPORT AudioManagerOpenBSD : public AudioManagerBase {
   DISALLOW_COPY_AND_ASSIGN(AudioManagerOpenBSD);
 };
 
+}  // namespace media
+
 #endif  // MEDIA_AUDIO_OPENBSD_AUDIO_MANAGER_OPENBSD_H_