Web MIDI: make MidiManagerMac notify device connections

content/browser/media/midi_host.cc

Index: content/browser/media/midi_host.cc
diff --git a/content/browser/media/midi_host.cc b/content/browser/media/midi_host.cc
index 2fc014785755b889c750cce0bc8a5b06d778b4af..27665e5a9a3188a3019cc499781383bfd26d5381 100644
--- a/content/browser/media/midi_host.cc
+++ b/content/browser/media/midi_host.cc
@@ -145,6 +145,14 @@ void MidiHost::AddOutputPort(const media::MidiPortInfo& info) {
   Send(new MidiMsg_AddOutputPort(info));
 }
 
+void MidiHost::SetInputPortState(uint32 port, bool connected) {
+  Send(new MidiMsg_SetInputPortState(port, connected));
+}
+
+void MidiHost::SetOutputPortState(uint32 port, bool connected) {
+  Send(new MidiMsg_SetOutputPortState(port, connected));
+}
+
 void MidiHost::ReceiveMidiData(
     uint32 port,
     const uint8* data,