Fix V8 bindings for named constructors to set prototype object correctly

third_party/WebKit/Source/bindings/tests/results/core/V8TestInterfaceEventTarget.cpp

Index: third_party/WebKit/Source/bindings/tests/results/core/V8TestInterfaceEventTarget.cpp
diff --git a/third_party/WebKit/Source/bindings/tests/results/core/V8TestInterfaceEventTarget.cpp b/third_party/WebKit/Source/bindings/tests/results/core/V8TestInterfaceEventTarget.cpp
index 4599e4c503401dbbb7ca3c5893d269ca12cb3035..f47387e1ed7fab3f0e6d18de26e3861ff89815f1 100644
--- a/third_party/WebKit/Source/bindings/tests/results/core/V8TestInterfaceEventTarget.cpp
+++ b/third_party/WebKit/Source/bindings/tests/results/core/V8TestInterfaceEventTarget.cpp
@@ -100,6 +100,41 @@ v8::Local<v8::FunctionTemplate> V8TestInterfaceEventTargetConstructor::domTempla
   return result;
 }
 
+void V8TestInterfaceEventTargetConstructor::NamedConstructorAttributeGetter(
+    v8::Local<v8::Name> propertyName,
+    const v8::PropertyCallbackInfo<v8::Value>& info) {
+  ExceptionState exceptionState(info.GetIsolate(), ExceptionState::ConstructionContext, "TestInterfaceEventTarget");
+  v8::Local<v8::Value> data = info.Data();
+  DCHECK(data->IsExternal());
+  V8PerContextData* perContextData =
+      V8PerContextData::from(info.Holder()->CreationContext());
+  if (!perContextData)
+    return;
+
+  v8::Local<v8::Function> namedConstructorInterface = perContextData->constructorForType(WrapperTypeInfo::unwrap(data));
+  v8::Local<v8::Function> interface = perContextData->constructorForType(&V8TestInterfaceEventTarget::wrapperTypeInfo);
+
+  // Set the prototype of named constructors to the regular constructor.
+  v8::Local<v8::Context> context = info.GetIsolate()->GetCurrentContext();
+  auto privateProperty = V8PrivateProperty::getNamedConstructorInitialized(info.GetIsolate());
+  v8::Local<v8::Value> privateValue = privateProperty.get(context, namedConstructorInterface);
+  if (privateValue.IsEmpty()) {
+    v8::MaybeLocal<v8::Value> interfacePrototype = interface->Get(context, v8AtomicString(info.GetIsolate(), "prototype"));
+    if (interfacePrototype.IsEmpty())
+      exceptionState.throwTypeError("Could not get prototype for V8TestInterfaceEventTarget.");
+
+    v8::Maybe<bool> setResult = namedConstructorInterface->Set(context, v8AtomicString(info.GetIsolate(), "prototype"), interfacePrototype.ToLocalChecked());
+    if (setResult.IsNothing() || setResult.ToChecked() != true) {
+      exceptionState.throwTypeError("Could not set prototype for TestInterfaceEventTarget.");
+    }
+
+    privateProperty.set(context, namedConstructorInterface, v8::True(info.GetIsolate()));
+  }
+
+  v8SetReturnValue(
+      info, perContextData->constructorForType(WrapperTypeInfo::unwrap(data)));
+}
+
 static void installV8TestInterfaceEventTargetTemplate(v8::Isolate* isolate, const DOMWrapperWorld& world, v8::Local<v8::FunctionTemplate> interfaceTemplate) {
   // Initialize the interface object's template.
   V8DOMConfiguration::initializeDOMInterfaceTemplate(isolate, interfaceTemplate, V8TestInterfaceEventTarget::wrapperTypeInfo.interfaceName, V8EventTarget::domTemplate(isolate, world), V8TestInterfaceEventTarget::internalFieldCount);