Web MIDI: make MidiManagerMac notify device connections

content/common/media/midi_messages.h

Index: content/common/media/midi_messages.h
diff --git a/content/common/media/midi_messages.h b/content/common/media/midi_messages.h
index 6f314b6d9c653309d1973393e21221b6b8892b5b..6147c8ae49f2ded19839e73ce310f5445a9c0886 100644
--- a/content/common/media/midi_messages.h
+++ b/content/common/media/midi_messages.h
@@ -17,11 +17,15 @@
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 #define IPC_MESSAGE_START MidiMsgStart
 
+IPC_ENUM_TRAITS_MAX_VALUE(media::MidiPortState,
+                          media::MIDI_PORT_STATE_LAST)
+
 IPC_STRUCT_TRAITS_BEGIN(media::MidiPortInfo)
   IPC_STRUCT_TRAITS_MEMBER(id)
   IPC_STRUCT_TRAITS_MEMBER(manufacturer)
   IPC_STRUCT_TRAITS_MEMBER(name)
   IPC_STRUCT_TRAITS_MEMBER(version)
+  IPC_STRUCT_TRAITS_MEMBER(state)
 IPC_STRUCT_TRAITS_END()
 
 IPC_ENUM_TRAITS_MAX_VALUE(media::MidiResult, media::MIDI_RESULT_LAST)
@@ -46,6 +50,14 @@ IPC_MESSAGE_CONTROL1(MidiMsg_AddInputPort,
 IPC_MESSAGE_CONTROL1(MidiMsg_AddOutputPort,
                      media::MidiPortInfo /* output port */)
 
+IPC_MESSAGE_CONTROL2(MidiMsg_SetInputPortState,
+                     uint32 /* port */,
+                     media::MidiPortState /* state */)
+
+IPC_MESSAGE_CONTROL2(MidiMsg_SetOutputPortState,
+                     uint32 /* port */,
+                     media::MidiPortState /* state */)
+
 IPC_MESSAGE_CONTROL1(MidiMsg_SessionStarted,
                      media::MidiResult /* result */)