API functions returning Promises should not throw exceptions.

Source/modules/webmidi/MIDIAccess.cpp

 /*
  * 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
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "modules/webmidi/MIDIAccess.h"
 
 #include "bindings/v8/MIDIAccessResolver.h"
+#include "bindings/v8/ScriptFunction.h"
 #include "bindings/v8/ScriptPromise.h"
 #include "bindings/v8/ScriptPromiseResolver.h"
 #include "bindings/v8/V8Binding.h"
 #include "core/dom/DOMError.h"
 #include "core/dom/Document.h"
 #include "core/loader/DocumentLoadTiming.h"
 #include "core/loader/DocumentLoader.h"
 #include "modules/webmidi/MIDIConnectionEvent.h"
 #include "modules/webmidi/MIDIController.h"
 #include "modules/webmidi/MIDIOptions.h"
@@ skipping 220 matching lines @@
 }
 
 void MIDIAccess::trace(Visitor* visitor)
 {
     visitor->trace(m_inputs);
     visitor->trace(m_outputs);
     visitor->trace(m_error);
 }
 
 } // namespace WebCore