Move media/audio files into media namespace

media/audio/openbsd/audio_manager_openbsd.cc

Index: media/audio/openbsd/audio_manager_openbsd.cc
diff --git a/media/audio/openbsd/audio_manager_openbsd.cc b/media/audio/openbsd/audio_manager_openbsd.cc
index 552d528f40ace62c9f0d61067ae6e1fc75c5426d..083f52690aebd766ef943f4dd6230522d7c51406 100644
--- a/media/audio/openbsd/audio_manager_openbsd.cc
+++ b/media/audio/openbsd/audio_manager_openbsd.cc
@@ -15,6 +15,8 @@
 
 #include <fcntl.h>
 
+namespace media {
+
 // Maximum number of output streams that can be open simultaneously.
 static const int kMaxOutputStreams = 50;
 
@@ -107,3 +109,5 @@ AudioOutputStream* AudioManagerOpenBSD::MakeOutputStream(
 AudioManager* CreateAudioManager() {
   return new AudioManagerOpenBSD();
 }
+
+}  // namespace media