[WIP][NotForLand] IDL dictionary support

Source/core/dom/SomeDictionaryUser.h

+// NOT FOR LAND
+#ifndef SomeDictionaryUser_h
+#define SomeDictionaryUser_h
+
+#include "bindings/core/v8/Nullable.h"
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "core/dom/Element.h"
+#include "core/dom/SomeDictionary.h"
+#include "platform/heap/Handle.h"
+#include "wtf/text/WTFString.h"
+
+namespace WebCore {
+
+class SomeDictionaryUser : public RefCountedWillBeGarbageCollected<SomeDictionaryUser>, public ScriptWrappable {
+public:
+    static PassRefPtrWillBeRawPtr<SomeDictionaryUser> create()
+    {
+        return adoptRefWillBeNoop(new SomeDictionaryUser());
+    }
+    virtual ~SomeDictionaryUser();
+
+    void set(const SomeDictionary*);
+    SomeDictionary* get();
+
+    // void trace();
+
+private:
+    SomeDictionaryUser();
+
+    Nullable<unsigned> m_a;
+    unsigned m_b;
+    String m_stringMember;
+    RefPtrWillBeMember<Element> m_element;
+    Nullable<bool> m_nullableBooleanMember;
+    Vector<String> m_stringSequenceMember;
+    WillBeHeapVector<RefPtrWillBeMember<Element> > m_elementArrayMember;
+};
+
+}
+
+#endif // SomeDictionaryUser_h