Web MIDI: add blink APIs to notify device connection events

Source/modules/webmidi/MIDIAccessor.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 49 matching lines @@
     m_accessor->startSession();
 }
 
 void MIDIAccessor::sendMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp)
 {
     m_accessor->sendMIDIData(portIndex, data, length, timeStamp);
 }
 
 void MIDIAccessor::didAddInputPort(const WebString& id, const WebString& manufacturer, const WebString& name, const WebString& version)
 {
-    m_client->didAddInputPort(id, manufacturer, name, version);
+    m_client->didAddInputPort(id, manufacturer, name, version, true);
 }
 
 void MIDIAccessor::didAddOutputPort(const WebString& id, const WebString& manufacturer, const WebString& name, const WebString& version)
 {
-    m_client->didAddOutputPort(id, manufacturer, name, version);
+    m_client->didAddOutputPort(id, manufacturer, name, version, true);
+}
+
+void MIDIAccessor::didAddInputPort(const WebString& id, const WebString& manufacturer, const WebString& name, const WebString& version, bool isActive)
+{
+    m_client->didAddInputPort(id, manufacturer, name, version, isActive);
+}
+
+void MIDIAccessor::didAddOutputPort(const WebString& id, const WebString& manufacturer, const WebString& name, const WebString& version, bool isActive)
+{
+    m_client->didAddOutputPort(id, manufacturer, name, version, isActive);
+}
+
+void MIDIAccessor::didSetInputPortState(unsigned portIndex, bool isActive)
+{
+    m_client->didSetInputPortState(portIndex, isActive);
+}
+
+void MIDIAccessor::didSetOutputPortState(unsigned portIndex, bool isActive)
+{
+    m_client->didSetOutputPortState(portIndex, isActive);
 }
 
 void MIDIAccessor::didStartSession(bool success, const WebString& error, const WebString& message)
 {
     m_client->didStartSession(success, error, message);
 }
 
 void MIDIAccessor::didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp)
 {
     m_client->didReceiveMIDIData(portIndex, data, length, timeStamp);
 }
 
 } // namespace blink