Fix StrictTypeChecking on interface type attributes

Source/bindings/tests/results/V8TestObject.cpp

Index: Source/bindings/tests/results/V8TestObject.cpp
diff --git a/Source/bindings/tests/results/V8TestObject.cpp b/Source/bindings/tests/results/V8TestObject.cpp
index 1ef6e10f75844b918fece82611a1ab98b2c72c0d..24524c78958f139745e82b111083d35f416c7231 100644
--- a/Source/bindings/tests/results/V8TestObject.cpp
+++ b/Source/bindings/tests/results/V8TestObject.cpp
@@ -3935,7 +3935,7 @@ static void strictTypeCheckingTestInterfaceAttributeAttributeSetter(v8::Local<v8
 {
     v8::Handle<v8::Object> holder = info.Holder();
     ExceptionState exceptionState(ExceptionState::SetterContext, "strictTypeCheckingTestInterfaceAttribute", "TestObject", holder, info.GetIsolate());
-    if (!isUndefinedOrNull(v8Value) && !V8TestInterface::hasInstance(v8Value, info.GetIsolate())) {
+    if (!V8TestInterface::hasInstance(v8Value, info.GetIsolate())) {
         exceptionState.throwTypeError("The provided value is not of type 'TestInterface'.");
         exceptionState.throwIfNeeded();
         return;
@@ -3952,6 +3952,46 @@ static void strictTypeCheckingTestInterfaceAttributeAttributeSetterCallback(v8::
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
+static void strictTypeCheckingNullableTestInterfaceAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
+{
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestObject* impl = V8TestObject::toNative(holder);
+    RefPtr<TestInterfaceImplementation> v8Value = impl->strictTypeCheckingNullableTestInterfaceAttribute();
+    if (!v8Value) {
+        v8SetReturnValueNull(info);
+        return;
+    }
+    v8SetReturnValueFast(info, WTF::getPtr(v8Value.release()), impl);
+}
+
+static void strictTypeCheckingNullableTestInterfaceAttributeAttributeGetterCallback(v8::Local<v8::String>, const v8::PropertyCallbackInfo<v8::Value>& info)
+{
+    TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMGetter");
+    TestObjectV8Internal::strictTypeCheckingNullableTestInterfaceAttributeAttributeGetter(info);
+    TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
+}
+
+static void strictTypeCheckingNullableTestInterfaceAttributeAttributeSetter(v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
+{
+    v8::Handle<v8::Object> holder = info.Holder();
+    ExceptionState exceptionState(ExceptionState::SetterContext, "strictTypeCheckingNullableTestInterfaceAttribute", "TestObject", holder, info.GetIsolate());
+    if (!isUndefinedOrNull(v8Value) && !V8TestInterface::hasInstance(v8Value, info.GetIsolate())) {
+        exceptionState.throwTypeError("The provided value is not of type 'TestInterface'.");
+        exceptionState.throwIfNeeded();
+        return;
+    }
+    TestObject* impl = V8TestObject::toNative(holder);
+    V8TRYCATCH_VOID(TestInterfaceImplementation*, cppValue, V8TestInterface::toNativeWithTypeCheck(info.GetIsolate(), v8Value));
+    impl->setStrictTypeCheckingNullableTestInterfaceAttribute(WTF::getPtr(cppValue));
+}
+
+static void strictTypeCheckingNullableTestInterfaceAttributeAttributeSetterCallback(v8::Local<v8::String>, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info)
+{
+    TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMSetter");
+    TestObjectV8Internal::strictTypeCheckingNullableTestInterfaceAttributeAttributeSetter(v8Value, info);
+    TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
+}
+
 static void treatNullAsNullStringStringAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     v8::Handle<v8::Object> holder = info.Holder();
@@ -7782,6 +7822,7 @@ static const V8DOMConfiguration::AttributeConfiguration V8TestObjectAttributes[]
     {"setterCallWithExecutionContextStringAttribute", TestObjectV8Internal::setterCallWithExecutionContextStringAttributeAttributeGetterCallback, TestObjectV8Internal::setterCallWithExecutionContextStringAttributeAttributeSetterCallback, 0, 0, 0, static_cast<v8::AccessControl>(v8::DEFAULT), static_cast<v8::PropertyAttribute>(v8::None), 0 /* on instance */},
     {"strictTypeCheckingFloatAttribute", TestObjectV8Internal::strictTypeCheckingFloatAttributeAttributeGetterCallback, TestObjectV8Internal::strictTypeCheckingFloatAttributeAttributeSetterCallback, 0, 0, 0, static_cast<v8::AccessControl>(v8::DEFAULT), static_cast<v8::PropertyAttribute>(v8::None), 0 /* on instance */},
     {"strictTypeCheckingTestInterfaceAttribute", TestObjectV8Internal::strictTypeCheckingTestInterfaceAttributeAttributeGetterCallback, TestObjectV8Internal::strictTypeCheckingTestInterfaceAttributeAttributeSetterCallback, 0, 0, 0, static_cast<v8::AccessControl>(v8::DEFAULT), static_cast<v8::PropertyAttribute>(v8::None), 0 /* on instance */},
+    {"strictTypeCheckingNullableTestInterfaceAttribute", TestObjectV8Internal::strictTypeCheckingNullableTestInterfaceAttributeAttributeGetterCallback, TestObjectV8Internal::strictTypeCheckingNullableTestInterfaceAttributeAttributeSetterCallback, 0, 0, 0, static_cast<v8::AccessControl>(v8::DEFAULT), static_cast<v8::PropertyAttribute>(v8::None), 0 /* on instance */},
     {"treatNullAsNullStringStringAttribute", TestObjectV8Internal::treatNullAsNullStringStringAttributeAttributeGetterCallback, TestObjectV8Internal::treatNullAsNullStringStringAttributeAttributeSetterCallback, 0, 0, 0, static_cast<v8::AccessControl>(v8::DEFAULT), static_cast<v8::PropertyAttribute>(v8::None), 0 /* on instance */},
     {"treatReturnedNullStringAsNullStringAttribute", TestObjectV8Internal::treatReturnedNullStringAsNullStringAttributeAttributeGetterCallback, TestObjectV8Internal::treatReturnedNullStringAsNullStringAttributeAttributeSetterCallback, 0, 0, 0, static_cast<v8::AccessControl>(v8::DEFAULT), static_cast<v8::PropertyAttribute>(v8::None), 0 /* on instance */},
     {"treatReturnedNullStringAsUndefinedStringAttribute", TestObjectV8Internal::treatReturnedNullStringAsUndefinedStringAttributeAttributeGetterCallback, TestObjectV8Internal::treatReturnedNullStringAsUndefinedStringAttributeAttributeSetterCallback, 0, 0, 0, static_cast<v8::AccessControl>(v8::DEFAULT), static_cast<v8::PropertyAttribute>(v8::None), 0 /* on instance */},