IDL: make optional arguments (without default) explicit sometimes

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 17dabd3a11bf32c1d00d40909f2fc1b5d4760366..4c5d0ff505783d0b0ac604d3d1dcc0f35c5bb5c2 100644
--- a/Source/bindings/tests/results/V8TestObject.cpp
+++ b/Source/bindings/tests/results/V8TestObject.cpp
@@ -6869,6 +6869,36 @@ static void voidMethodDefaultNullableTestInterfaceArgMethodCallback(const v8::Fu
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
 }
 
+static void voidMethodOptionalArgWithoutDefaultMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TestObject* impl = V8TestObject::toNative(info.Holder());
+    V8StringResource<> optionalStringArg;
+    bool optionalStringArgMissing = false;
+    bool defaultBooleanArg;
+    {
+        v8::TryCatch block;
+        V8RethrowTryCatchScope rethrow(block);
+        if (info.Length() > 0) {
+            TOSTRING_VOID_INTERNAL(optionalStringArg, info[0]);
+        } else {
+            optionalStringArgMissing = true;
+        }
+        if (info.Length() > 1) {
+            TONATIVE_VOID_INTERNAL(defaultBooleanArg, info[1]->BooleanValue());
+        } else {
+            defaultBooleanArg = false;
+        }
+    }
+    impl->voidMethodOptionalArgWithoutDefault(makeOptional(optionalStringArg, optionalStringArgMissing), defaultBooleanArg);
+}
+
+static void voidMethodOptionalArgWithoutDefaultMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
+    TestObjectV8Internal::voidMethodOptionalArgWithoutDefaultMethod(info);
+    TRACE_EVENT_SET_SAMPLING_STATE("V8", "V8Execution");
+}
+
 static void voidMethodVariadicStringArgMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TestObject* impl = V8TestObject::toNative(info.Holder());
@@ -9643,6 +9673,7 @@ static const V8DOMConfiguration::MethodConfiguration V8TestObjectMethods[] = {
     {"voidMethodDefaultNullableByteStringArg", TestObjectV8Internal::voidMethodDefaultNullableByteStringArgMethodCallback, 0, 0},
     {"voidMethodDefaultNullableStringArg", TestObjectV8Internal::voidMethodDefaultNullableStringArgMethodCallback, 0, 0},
     {"voidMethodDefaultNullableTestInterfaceArg", TestObjectV8Internal::voidMethodDefaultNullableTestInterfaceArgMethodCallback, 0, 0},
+    {"voidMethodOptionalArgWithoutDefault", TestObjectV8Internal::voidMethodOptionalArgWithoutDefaultMethodCallback, 0, 0},
     {"voidMethodVariadicStringArg", TestObjectV8Internal::voidMethodVariadicStringArgMethodCallback, 0, 0},
     {"voidMethodStringArgVariadicStringArg", TestObjectV8Internal::voidMethodStringArgVariadicStringArgMethodCallback, 0, 1},
     {"voidMethodVariadicTestInterfaceEmptyArg", TestObjectV8Internal::voidMethodVariadicTestInterfaceEmptyArgMethodCallback, 0, 0},