Web MIDI: implement MIDIErrorCallback

Source/modules/webmidi/MIDIErrorCallback.h

Index: Source/modules/webmidi/MIDIErrorCallback.h
diff --git a/Source/core/dom/StringCallback.h b/Source/modules/webmidi/MIDIErrorCallback.h
similarity index 79%
copy from Source/core/dom/StringCallback.h
copy to Source/modules/webmidi/MIDIErrorCallback.h
index 92e83e2196093b00a42ae9fde89b2612821d2d45..3a0e41edbee99b7c447866ce544afa475c131c10 100644
--- a/Source/core/dom/StringCallback.h
+++ b/Source/modules/webmidi/MIDIErrorCallback.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2010 Google Inc. All rights reserved.
+ * 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
@@ -28,25 +28,26 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef StringCallback_h
-#define StringCallback_h
+#ifndef MIDIErrorCallback_h
+#define MIDIErrorCallback_h
 
-#include <wtf/Forward.h>
-#include <wtf/RefCounted.h>
+#include "wtf/PassRefPtr.h"
+#include "wtf/RefCounted.h"
 
 namespace WebCore {
 
+class DOMError;
 class ScriptExecutionContext;
 
-class StringCallback : public RefCounted<StringCallback> {
+class MIDIErrorCallback : public RefCounted<MIDIErrorCallback> {
 public:
-    virtual ~StringCallback() { }
-    virtual bool handleEvent(const String& data) = 0;
+    virtual ~MIDIErrorCallback() { }
+    virtual bool handleEvent(DOMError*) = 0;
 
     // Helper to post callback task.
-    void scheduleCallback(ScriptExecutionContext*, const String& data);
+    void scheduleCallback(ScriptExecutionContext*, PassRefPtr<DOMError>);
 };
 
 } // namespace WebCore
 
-#endif // StringCallback_h
+#endif // MIDIErrorCallback_h