Web MIDI: dispatch MIDIConnectionEvent

Source/modules/webmidi/MIDIAccess.cpp

Index: Source/modules/webmidi/MIDIAccess.cpp
diff --git a/Source/modules/webmidi/MIDIAccess.cpp b/Source/modules/webmidi/MIDIAccess.cpp
index c9ea88f5b25d9fc3b31c8a6ff7196dd62e51d889..f50036b5ec1d7b3493e1d10b6d7a80fe4c4b0232 100644
--- a/Source/modules/webmidi/MIDIAccess.cpp
+++ b/Source/modules/webmidi/MIDIAccess.cpp
@@ -107,6 +107,8 @@ void MIDIAccess::didAddInputPort(const String& id, const String& manufacturer, c
 {
     ASSERT(isMainThread());
     m_inputs.append(MIDIInput::create(this, id, manufacturer, name, version, isActive));
+    // FIXME: Pass MIDIPort.
+    dispatchEvent(MIDIConnectionEvent::create());
 }
 
 void MIDIAccess::didAddOutputPort(const String& id, const String& manufacturer, const String& name, const String& version, bool isActive)
@@ -114,20 +116,30 @@ void MIDIAccess::didAddOutputPort(const String& id, const String& manufacturer,
     ASSERT(isMainThread());
     unsigned portIndex = m_outputs.size();
     m_outputs.append(MIDIOutput::create(this, portIndex, id, manufacturer, name, version, isActive));
+    // FIXME: Pass MIDIPort.
+    dispatchEvent(MIDIConnectionEvent::create());
 }
 
 void MIDIAccess::didSetInputPortState(unsigned portIndex, bool isActive)
 {
     ASSERT(isMainThread());
-    if (portIndex < m_inputs.size())
-        m_inputs[portIndex]->setActiveState(isActive);
+    if (portIndex >= m_inputs.size())
+        return;
+
+    m_inputs[portIndex]->setActiveState(isActive);
+    // FIXME: Pass MIDIPort.
+    dispatchEvent(MIDIConnectionEvent::create());
 }
 
 void MIDIAccess::didSetOutputPortState(unsigned portIndex, bool isActive)
 {
     ASSERT(isMainThread());
-    if (portIndex < m_outputs.size())
-        m_outputs[portIndex]->setActiveState(isActive);
+    if (portIndex >= m_outputs.size())
+        return;
+
+    m_outputs[portIndex]->setActiveState(isActive);
+    // FIXME: Pass MIDIPort.
+    dispatchEvent(MIDIConnectionEvent::create());
 }
 
 void MIDIAccess::didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp)