IDL: Support default values for dictionary members of union types

Source/bindings/tests/results/core/TestDictionary.h

Index: Source/bindings/tests/results/core/TestDictionary.h
diff --git a/Source/bindings/tests/results/core/TestDictionary.h b/Source/bindings/tests/results/core/TestDictionary.h
index 6b371e9ae8b48e7c65c074cfa4055b3da4b4b98e..b7f7231644a4de37f96fa0f549e9135f56c6d899 100644
--- a/Source/bindings/tests/results/core/TestDictionary.h
+++ b/Source/bindings/tests/results/core/TestDictionary.h
@@ -76,6 +76,10 @@ public:
     void setObjectOrNullMember(ScriptValue value) { m_objectOrNullMember = value; }
     void setObjectOrNullMemberToNull() { m_objectOrNullMember = ScriptValue(); }
 
+    bool hasOtherDoubleOrStringMember() const { return !m_otherDoubleOrStringMember.isNull(); }
+    const DoubleOrString& otherDoubleOrStringMember() const { return m_otherDoubleOrStringMember; }
+    void setOtherDoubleOrStringMember(const DoubleOrString& value) { m_otherDoubleOrStringMember = value; }
+
     bool hasRestrictedDoubleMember() const { return !m_restrictedDoubleMember.isNull(); }
     double restrictedDoubleMember() const { return m_restrictedDoubleMember.get(); }
     void setRestrictedDoubleMember(double value) { m_restrictedDoubleMember = value; }
@@ -150,6 +154,7 @@ private:
     Nullable<int> m_longMember;
     ScriptValue m_objectMember;
     ScriptValue m_objectOrNullMember;
+    DoubleOrString m_otherDoubleOrStringMember;
     Nullable<double> m_restrictedDoubleMember;
     Nullable<Vector<String>> m_stringArrayMember;
     String m_stringMember;