IDL: Null values should be converted for non-nullable dictionary members

Source/bindings/tests/results/core/V8TestDictionaryDerived.cpp

Index: Source/bindings/tests/results/core/V8TestDictionaryDerived.cpp
diff --git a/Source/bindings/tests/results/core/V8TestDictionaryDerived.cpp b/Source/bindings/tests/results/core/V8TestDictionaryDerived.cpp
index 5982e3377808d483a30f1cb06c097530ed091153..e332c5612219f9babf14116d14f3e664e0595506 100644
--- a/Source/bindings/tests/results/core/V8TestDictionaryDerived.cpp
+++ b/Source/bindings/tests/results/core/V8TestDictionaryDerived.cpp
@@ -28,22 +28,28 @@ void V8TestDictionaryDerivedImplementedAs::toImpl(v8::Isolate* isolate, v8::Hand
     v8::Local<v8::Object> v8Object = v8Value->ToObject(isolate);
     v8::TryCatch block;
     v8::Local<v8::Value> derivedStringMemberValue = v8Object->Get(v8String(isolate, "derivedStringMember"));
-    if (!derivedStringMemberValue.IsEmpty() && !isUndefinedOrNull(derivedStringMemberValue)) {
-        TOSTRING_VOID(V8StringResource<>, derivedStringMember, derivedStringMemberValue);
-        impl.setDerivedStringMember(derivedStringMember);
-    } else if (block.HasCaught()) {
+    if (block.HasCaught()) {
         exceptionState.rethrowV8Exception(block.Exception());
         return;
     }
+    if (derivedStringMemberValue.IsEmpty() || derivedStringMemberValue->IsUndefined()) {
+        // Do nothing.
+    } else {
+        TOSTRING_VOID(V8StringResource<>, derivedStringMember, derivedStringMemberValue);
+        impl.setDerivedStringMember(derivedStringMember);
+    }
 
     v8::Local<v8::Value> derivedStringMemberWithDefaultValue = v8Object->Get(v8String(isolate, "derivedStringMemberWithDefault"));
-    if (!derivedStringMemberWithDefaultValue.IsEmpty() && !isUndefinedOrNull(derivedStringMemberWithDefaultValue)) {
-        TOSTRING_VOID(V8StringResource<>, derivedStringMemberWithDefault, derivedStringMemberWithDefaultValue);
-        impl.setDerivedStringMemberWithDefault(derivedStringMemberWithDefault);
-    } else if (block.HasCaught()) {
+    if (block.HasCaught()) {
         exceptionState.rethrowV8Exception(block.Exception());
         return;
     }
+    if (derivedStringMemberWithDefaultValue.IsEmpty() || derivedStringMemberWithDefaultValue->IsUndefined()) {
+        // Do nothing.
+    } else {
+        TOSTRING_VOID(V8StringResource<>, derivedStringMemberWithDefault, derivedStringMemberWithDefaultValue);
+        impl.setDerivedStringMemberWithDefault(derivedStringMemberWithDefault);
+    }
 
 }