IDL: Support using nullable on any method return type

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 0e64c0360929c3a48c083492a4d80dedd528cf2d..10edd5c1c08cba99f0792a23620823fe0679fa49 100644
--- a/Source/bindings/tests/results/V8TestObject.cpp
+++ b/Source/bindings/tests/results/V8TestObject.cpp
@@ -6606,6 +6606,66 @@ static void voidMethodSequenceTestInterfaceEmptyArgMethodCallback(const v8::Func
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
+static void nullableLongMethodMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TestObject* impl = V8TestObject::toNative(info.Holder());
+    Nullable<int> result = impl->nullableLongMethod();
+    if (result.isNull())
+        v8SetReturnValueNull(info);
+    else
+        v8SetReturnValueInt(info, result.get());
+}
+
+static void nullableLongMethodMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
+    TestObjectV8Internal::nullableLongMethodMethod(info);
+    TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
+}
+
+static void nullableStringMethodMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8SetReturnValueStringOrNull(info, impl->nullableStringMethod(), info.GetIsolate());
+}
+
+static void nullableStringMethodMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
+    TestObjectV8Internal::nullableStringMethodMethod(info);
+    TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
+}
+
+static void nullableTestInterfaceMethodMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TestObject* impl = V8TestObject::toNative(info.Holder());
+    v8SetReturnValue(info, impl->nullableTestInterfaceMethod());
+}
+
+static void nullableTestInterfaceMethodMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
+    TestObjectV8Internal::nullableTestInterfaceMethodMethod(info);
+    TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
+}
+
+static void nullableLongSequenceMethodMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TestObject* impl = V8TestObject::toNative(info.Holder());
+    Nullable<Vector<int> > result = impl->nullableLongSequenceMethod();
+    if (result.isNull())
+        v8SetReturnValueNull(info);
+    else
+        v8SetReturnValue(info, v8Array(result.get(), info.Holder(), info.GetIsolate()));
+}
+
+static void nullableLongSequenceMethodMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
+    TestObjectV8Internal::nullableLongSequenceMethodMethod(info);
+    TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
+}
+
 static void voidMethodTestInterfaceEmptyOrNullArgMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     if (UNLIKELY(info.Length() < 1)) {
@@ -10589,6 +10649,10 @@ static const V8DOMConfiguration::MethodConfiguration V8TestObjectMethods[] = {
     {"voidMethodSequenceLongArg", TestObjectV8Internal::voidMethodSequenceLongArgMethodCallback, 0, 1},
     {"voidMethodSequenceStringArg", TestObjectV8Internal::voidMethodSequenceStringArgMethodCallback, 0, 1},
     {"voidMethodSequenceTestInterfaceEmptyArg", TestObjectV8Internal::voidMethodSequenceTestInterfaceEmptyArgMethodCallback, 0, 1},
+    {"nullableLongMethod", TestObjectV8Internal::nullableLongMethodMethodCallback, 0, 0},
+    {"nullableStringMethod", TestObjectV8Internal::nullableStringMethodMethodCallback, 0, 0},
+    {"nullableTestInterfaceMethod", TestObjectV8Internal::nullableTestInterfaceMethodMethodCallback, 0, 0},
+    {"nullableLongSequenceMethod", TestObjectV8Internal::nullableLongSequenceMethodMethodCallback, 0, 0},
     {"voidMethodTestInterfaceEmptyOrNullArg", TestObjectV8Internal::voidMethodTestInterfaceEmptyOrNullArgMethodCallback, 0, 1},
     {"voidMethodTestCallbackInterfaceArg", TestObjectV8Internal::voidMethodTestCallbackInterfaceArgMethodCallback, 0, 1},
     {"voidMethodOptionalTestCallbackInterfaceArg", TestObjectV8Internal::voidMethodOptionalTestCallbackInterfaceArgMethodCallback, 0, 0},