Web MIDI: implement MIDIInput

Source/modules/webmidi/MIDIInput.h

Index: Source/modules/webmidi/MIDIInput.h
diff --git a/Source/modules/webmidi/MIDIErrorCallback.h b/Source/modules/webmidi/MIDIInput.h
similarity index 71%
copy from Source/modules/webmidi/MIDIErrorCallback.h
copy to Source/modules/webmidi/MIDIInput.h
index 3a0e41edbee99b7c447866ce544afa475c131c10..eb283ecc2e7c5a041014b31105a64ce1bbb362cb 100644
--- a/Source/modules/webmidi/MIDIErrorCallback.h
+++ b/Source/modules/webmidi/MIDIInput.h
@@ -28,26 +28,30 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef MIDIErrorCallback_h
-#define MIDIErrorCallback_h
+#ifndef MIDIInput_h
+#define MIDIInput_h
 
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
+#include "core/dom/EventTarget.h"
+#include "modules/webmidi/MIDIPort.h"
 
 namespace WebCore {
 
-class DOMError;
 class ScriptExecutionContext;
 
-class MIDIErrorCallback : public RefCounted<MIDIErrorCallback> {
+class MIDIInput : public MIDIPort {
 public:
-    virtual ~MIDIErrorCallback() { }
-    virtual bool handleEvent(DOMError*) = 0;
+    static PassRefPtr<MIDIInput> create(ScriptExecutionContext*, const String& id, const String& manufacturer, const String& name, const String& version);
+    virtual ~MIDIInput() { }
 
-    // Helper to post callback task.
-    void scheduleCallback(ScriptExecutionContext*, PassRefPtr<DOMError>);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(midimessage);
+
+    // EventTarget
+    virtual const AtomicString& interfaceName() const OVERRIDE { return eventNames().interfaceForMIDIInput; }
+
+private:
+    MIDIInput(ScriptExecutionContext*, const String& id, const String& manufacturer, const String& name, const String& version);
 };
 
 } // namespace WebCore
 
-#endif // MIDIErrorCallback_h
+#endif // MIDIInput_h