Introduce MIDIInputMap and MIDIOutputMap.

Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 134 matching lines @@
 
 namespace {
 
 class InternalsIterator FINAL : public Iterator {
 public:
     InternalsIterator() : m_current(0) { }
 
     virtual ScriptValue next(ScriptState* scriptState, ExceptionState& exceptionState) OVERRIDE
     {
         v8::Isolate* isolate = scriptState->isolate();
-        v8::Local<v8::Value> value = v8::Integer::New(isolate, m_current * m_current);
-        bool done = (m_current >= 5);
+        int value = m_current * m_current;
+        if (m_current >= 5)
+            return ScriptValue(scriptState, v8DoneIteratorResult(isolate));
         ++m_current;
-
-        v8::Local<v8::Object> result = v8::Object::New(isolate);
-        result->Set(v8String(isolate, "value"), value);
-        result->Set(v8String(isolate, "done"), v8Boolean(done, isolate));
-        return ScriptValue(scriptState, result);
+        return ScriptValue(scriptState, v8IteratorResult(scriptState, value));
     }
 
     virtual ScriptValue next(ScriptState* scriptState, ScriptValue value, ExceptionState& exceptionState) OVERRIDE
     {
         exceptionState.throwTypeError("Not implemented");
         return ScriptValue();
     }
 
 private:
     int m_current;
@@ skipping 2089 matching lines @@
     element->ensureUserAgentShadowRoot().setInnerHTML(htmlSource, exceptionState);
     toHTMLPlugInElement(element)->setUsePlaceholderContent(true);
 }
 
 Iterator* Internals::iterator(ScriptState* scriptState, ExceptionState& exceptionState)
 {
     return new InternalsIterator;
 }
 
 } // namespace blink