Fulfill or reject MIDIAccessPromise from MIDIAccessor

Source/modules/webmidi/MIDIInput.cpp

Index: Source/modules/webmidi/MIDIInput.cpp
diff --git a/Source/modules/webmidi/MIDIInput.cpp b/Source/modules/webmidi/MIDIInput.cpp
index 606d21c3cf41cdd1a59d310897208530fa5939e7..a5dee099588ff1cf228b26c9234b4e538f9e97da 100644
--- a/Source/modules/webmidi/MIDIInput.cpp
+++ b/Source/modules/webmidi/MIDIInput.cpp
@@ -30,6 +30,7 @@
 
 #include "config.h"
 #include "modules/webmidi/MIDIInput.h"
+#include "modules/webmidi/MIDIMessageEvent.h"
 
 namespace WebCore {
 
@@ -44,4 +45,14 @@ MIDIInput::MIDIInput(ScriptExecutionContext* context, const String& id, const St
     ScriptWrappable::init(this);
 }
 
+void MIDIInput::didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp)
+{
+    ASSERT(isMainThread());
+
+    RefPtr<Uint8Array> array = Uint8Array::create(length);
+    array->setRange(data, length, 0);
+
+    dispatchEvent(MIDIMessageEvent::create(timeStamp, array));
+}
+
 } // namespace WebCore