IDL: Support default values for dictionary members of union types

Source/bindings/tests/results/modules/UnionTypesModules.cpp

Index: Source/bindings/tests/results/modules/UnionTypesModules.cpp
diff --git a/Source/bindings/tests/results/modules/UnionTypesModules.cpp b/Source/bindings/tests/results/modules/UnionTypesModules.cpp
index bd60b7378d1f5e25e54cc75229e48e3382ea2535..6438e18dd44c7c5b7e81fde3f33ddab95f11f56b 100644
--- a/Source/bindings/tests/results/modules/UnionTypesModules.cpp
+++ b/Source/bindings/tests/results/modules/UnionTypesModules.cpp
@@ -28,6 +28,13 @@ void BooleanOrString::setBoolean(bool value)
     m_type = SpecificTypeBoolean;
 }
 
+BooleanOrString BooleanOrString::fromBoolean(bool value)
+{
+    BooleanOrString container;
+    container.setBoolean(value);
+    return container;
+}
+
 String BooleanOrString::getAsString() const
 {
     ASSERT(isString());
@@ -41,6 +48,13 @@ void BooleanOrString::setString(String value)
     m_type = SpecificTypeString;
 }
 
+BooleanOrString BooleanOrString::fromString(String value)
+{
+    BooleanOrString container;
+    container.setString(value);
+    return container;
+}
+
 void V8BooleanOrString::toImpl(v8::Isolate* isolate, v8::Local<v8::Value> v8Value, BooleanOrString& impl, ExceptionState& exceptionState)
 {
     if (v8Value.IsEmpty())