Web MIDI: add blink APIs to notify device connection events

Source/modules/webmidi/MIDIInput.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 19 matching lines @@
 
 #include "config.h"
 #include "modules/webmidi/MIDIInput.h"
 
 #include "modules/webmidi/MIDIAccess.h"
 #include "modules/webmidi/MIDIMessageEvent.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
-MIDIInput* MIDIInput::create(MIDIAccess* access, const String& id, const String& manufacturer, const String& name, const String& version)
+MIDIInput* MIDIInput::create(MIDIAccess* access, const String& id, const String& manufacturer, const String& name, const String& version, bool isActive)
 {
     ASSERT(access);
-    return new MIDIInput(access, id, manufacturer, name, version);
+    return new MIDIInput(access, id, manufacturer, name, version, isActive);
 }
 
-MIDIInput::MIDIInput(MIDIAccess* access, const String& id, const String& manufacturer, const String& name, const String& version)
-    : MIDIPort(access, id, manufacturer, name, MIDIPortTypeInput, version)
+MIDIInput::MIDIInput(MIDIAccess* access, const String& id, const String& manufacturer, const String& name, const String& version, bool isActive)
+    : MIDIPort(access, id, manufacturer, name, MIDIPortTypeInput, version, isActive)
 {
 }
 
 void MIDIInput::didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp)
 {
     ASSERT(isMainThread());
 
     if (!length)
         return;
 
     // Drop sysex message here when the client does not request it. Note that this is not a security check but an
     // automatic filtering for clients that do not want sysex message. Also note that sysex message will never be sent
     // unless the current process has an explicit permission to handle sysex message.
     if (data[0] == 0xf0 && !midiAccess()->sysexEnabled())
         return;
     RefPtr<Uint8Array> array = Uint8Array::create(data, length);
     dispatchEvent(MIDIMessageEvent::create(timeStamp, array));
 }
 
 void MIDIInput::trace(Visitor* visitor)
 {
     MIDIPort::trace(visitor);
 }
 
 } // namespace blink