[DO NOT LAND] Set @@toStringTag for DOM object prototypes

third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterface5.cpp

Index: third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterface5.cpp
diff --git a/third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterface5.cpp b/third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterface5.cpp
index a794a5c81519f2bad779f7c6f11a1c6ad62b24c5..735a90ef36ae1c4dc3b37e701fd487c127ad8017 100644
--- a/third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterface5.cpp
+++ b/third_party/WebKit/Source/bindings/tests/results/modules/V8TestInterface5.cpp
@@ -1002,6 +1002,8 @@ static void installV8TestInterface5Template(v8::Local<v8::FunctionTemplate> func
     const V8DOMConfiguration::MethodConfiguration toStringMethodConfiguration = {"toString", TestInterface5ImplementationV8Internal::toStringMethodCallback, 0, 0, V8DOMConfiguration::ExposedToAllScripts, V8DOMConfiguration::OnPrototype};
     V8DOMConfiguration::installMethod(isolate, instanceTemplate, prototypeTemplate, functionTemplate, defaultSignature, static_cast<v8::PropertyAttribute>(v8::DontDelete | v8::DontEnum), toStringMethodConfiguration);
 
+    prototypeTemplate->Set(v8::Symbol::GetToStringTag(isolate), v8AtomicString(isolate, "TestInterface5"));
+
     // Custom toString template
     functionTemplate->Set(v8AtomicString(isolate, "toString"), V8PerIsolateData::from(isolate)->toStringTemplate());
 }