Web MIDI: namespace change from media to media::midi

media/midi/midi_manager.h

Index: media/midi/midi_manager.h
diff --git a/media/midi/midi_manager.h b/media/midi/midi_manager.h
index 2904c117a1f10d790fc431a3a59d10107868ab47..3497577893e69f3d1672bba466b1f1febf1deb2a 100644
--- a/media/midi/midi_manager.h
+++ b/media/midi/midi_manager.h
@@ -21,6 +21,7 @@ class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace media {
+namespace midi {
 
 // A MidiManagerClient registers with the MidiManager to receive MIDI data.
 // See MidiManager::RequestAccess() and MidiManager::ReleaseAccess()
@@ -183,6 +184,7 @@ class MEDIA_EXPORT MidiManager {
   DISALLOW_COPY_AND_ASSIGN(MidiManager);
 };
 
+}  // namespace midi
 }  // namespace media
 
 #endif  // MEDIA_MIDI_MIDI_MANAGER_H_