IDL: Auto-generate NativeValueTraits for IDL dictionaries

Source/bindings/tests/results/core/V8TestDictionary.h

Index: Source/bindings/tests/results/core/V8TestDictionary.h
diff --git a/Source/bindings/tests/results/core/V8TestDictionary.h b/Source/bindings/tests/results/core/V8TestDictionary.h
index ff9c53121781e6552377129a6fa05a0edecc57ef..3dfba3d5788f54b6f10cac1c7f1e084b42582d60 100644
--- a/Source/bindings/tests/results/core/V8TestDictionary.h
+++ b/Source/bindings/tests/results/core/V8TestDictionary.h
@@ -20,8 +20,8 @@ public:
     static void toImpl(v8::Isolate*, v8::Handle<v8::Value>, TestDictionary&, ExceptionState&);
 };
 
-v8::Handle<v8::Value> toV8(TestDictionary&, v8::Handle<v8::Object>, v8::Isolate*);
-void toV8TestDictionary(TestDictionary&, v8::Handle<v8::Object> dictionary, v8::Handle<v8::Object> creationContext, v8::Isolate*);
+v8::Handle<v8::Value> toV8(const TestDictionary&, v8::Handle<v8::Object>, v8::Isolate*);
+void toV8TestDictionary(const TestDictionary&, v8::Handle<v8::Object> dictionary, v8::Handle<v8::Object> creationContext, v8::Isolate*);
 
 template<class CallbackInfo>
 inline void v8SetReturnValue(const CallbackInfo& callbackInfo, TestDictionary& impl)
@@ -29,6 +29,11 @@ inline void v8SetReturnValue(const CallbackInfo& callbackInfo, TestDictionary& i
     v8SetReturnValue(callbackInfo, toV8(impl, callbackInfo.Holder(), callbackInfo.GetIsolate()));
 }
 
+template <>
+struct NativeValueTraits<TestDictionary> {
+    static TestDictionary nativeValue(const v8::Handle<v8::Value>&, v8::Isolate*, ExceptionState&);
+};
+
 } // namespace blink
 
 #endif // V8TestDictionary_h