Web MIDI: make MidiManagerMac notify device connections

media/midi/midi_manager_mac.h

Index: media/midi/midi_manager_mac.h
diff --git a/media/midi/midi_manager_mac.h b/media/midi/midi_manager_mac.h
index f7179ec18a7494b3f1181481a59184053dc3d4f1..e8e44748176c858e12033c703117e26feda21f02 100644
--- a/media/midi/midi_manager_mac.h
+++ b/media/midi/midi_manager_mac.h
@@ -42,13 +42,18 @@ class MEDIA_EXPORT MidiManagerMac : public MidiManager {
   // StartInitialization().
   void InitializeCoreMIDI();
 
+  // CoreMIDI callback for MIDI notification.
+  // Receives MIDI related event notifications from CoreMIDI.
+  static void ReceiveMidiNotifyDispatch(const MIDINotification* message,
+                                        void* refcon);
+  void ReceiveMidiNotify(const MIDINotification* message);
+
   // CoreMIDI callback for MIDI data.
   // Each callback can contain multiple packets, each of which can contain
   // multiple MIDI messages.
-  static void ReadMidiDispatch(
-      const MIDIPacketList *pktlist,
-      void *read_proc_refcon,
-      void *src_conn_refcon);
+  static void ReadMidiDispatch(const MIDIPacketList* packet_list,
+                               void* read_proc_refcon,
+                               void* src_conn_refcon);
   virtual void ReadMidi(MIDIEndpointRef source, const MIDIPacketList *pktlist);
 
   // An internal callback that runs on MidiSendThread.
@@ -67,13 +72,13 @@ class MEDIA_EXPORT MidiManagerMac : public MidiManager {
   MIDIPacketList* packet_list_;
   MIDIPacket* midi_packet_;
 
-  typedef std::map<MIDIEndpointRef, uint32> SourceMap;
-
   // Keeps track of the index (0-based) for each of our sources.
+  typedef std::map<MIDIEndpointRef, uint32> SourceMap;
   SourceMap source_map_;
 
   // Keeps track of all destinations.
-  std::vector<MIDIEndpointRef> destinations_;
+  typedef std::vector<MIDIEndpointRef> DestinationVector;
+  DestinationVector destinations_;
 
   // |client_thread_| is used to handle platform dependent operations.
   base::Thread client_thread_;