Change EventTarget callback APIs for add/RemoveEventListenerInternal.

third_party/WebKit/Source/modules/webmidi/MIDIInput.cpp

Index: third_party/WebKit/Source/modules/webmidi/MIDIInput.cpp
diff --git a/third_party/WebKit/Source/modules/webmidi/MIDIInput.cpp b/third_party/WebKit/Source/modules/webmidi/MIDIInput.cpp
index 91c5d46c29f0fd82716566e5aca36c9e5b4f6749..f04d526cca79c33e34fbf37fa052985be6f89836 100644
--- a/third_party/WebKit/Source/modules/webmidi/MIDIInput.cpp
+++ b/third_party/WebKit/Source/modules/webmidi/MIDIInput.cpp
@@ -65,13 +65,13 @@ void MIDIInput::setOnmidimessage(EventListener* listener)
     setAttributeEventListener(EventTypeNames::midimessage, listener);
 }
 
-bool MIDIInput::addEventListenerInternal(const AtomicString& eventType, EventListener* listener, const EventListenerOptions& options)
+void MIDIInput::addedEventListener(const AtomicString& eventType, const RegisteredEventListener& registeredListener)
 {
+    MIDIPort::addedEventListener(eventType, registeredListener);
     if (eventType == EventTypeNames::midimessage) {
         // Implicit open. See setOnmidimessage().
         open();

[bokan, 2016/05/03 15:52:47]

Ditto here, this used to be called on success or failure. Should have a local
expert look this over.

[dtapuska, 2016/05/03 20:53:04]

Added toyoshim@

     }
-    return EventTarget::addEventListenerInternal(eventType, listener, options);
 }
 
 void MIDIInput::didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp)