IDL: Drop value conversion (V8 -> C++) macros from generated code

Source/bindings/tests/results/core/V8TestInterfaceEventInit.cpp

Index: Source/bindings/tests/results/core/V8TestInterfaceEventInit.cpp
diff --git a/Source/bindings/tests/results/core/V8TestInterfaceEventInit.cpp b/Source/bindings/tests/results/core/V8TestInterfaceEventInit.cpp
index 6162dff4f20385fec819a44e11e57b4a96817c3b..19099a3650331644d262a104f4d6056e41328ed3 100644
--- a/Source/bindings/tests/results/core/V8TestInterfaceEventInit.cpp
+++ b/Source/bindings/tests/results/core/V8TestInterfaceEventInit.cpp
@@ -12,33 +12,33 @@
 
 namespace blink {
 
-void V8TestInterfaceEventInit::toImpl(v8::Isolate* isolate, v8::Local<v8::Value> v8Value, TestInterfaceEventInit& impl, ExceptionState& exceptionState)
+bool V8TestInterfaceEventInit::toImpl(v8::Isolate* isolate, v8::Local<v8::Value> v8Value, TestInterfaceEventInit& impl, ExceptionState& exceptionState)
 {
     if (isUndefinedOrNull(v8Value))
-        return;
+        return true;
     if (!v8Value->IsObject()) {
         exceptionState.throwTypeError("cannot convert to dictionary.");
-        return;
+        return false;
     }
 
-    V8EventInitDictionary::toImpl(isolate, v8Value, impl, exceptionState);
-    if (exceptionState.hadException())
-        return;
+    if (!V8EventInitDictionary::toImpl(isolate, v8Value, impl, exceptionState))
+        return false;
 
     v8::Local<v8::Object> v8Object = v8Value->ToObject(isolate);
     v8::TryCatch block;
     v8::Local<v8::Value> stringMemberValue = v8Object->Get(v8String(isolate, "stringMember"));
     if (block.HasCaught()) {
         exceptionState.rethrowV8Exception(block.Exception());
-        return;
+        return false;
     }
     if (stringMemberValue.IsEmpty() || stringMemberValue->IsUndefined()) {
         // Do nothing.
     } else {
-        TOSTRING_VOID(V8StringResource<>, stringMember, stringMemberValue);
+        TONATIVE_DECLARE(V8StringResource<>, stringMember, (stringMember = stringMemberValue).prepare(exceptionState), return false);
         impl.setStringMember(stringMember);
     }
 
+    return true;
 }
 
 v8::Local<v8::Value> toV8(const TestInterfaceEventInit& impl, v8::Local<v8::Object> creationContext, v8::Isolate* isolate)