Add overload support for non-wrapper type vs. primitive type

Source/bindings/scripts/code_generator_v8.pm

Index: Source/bindings/scripts/code_generator_v8.pm
diff --git a/Source/bindings/scripts/code_generator_v8.pm b/Source/bindings/scripts/code_generator_v8.pm
index 43df75f485c36b565f37b8095369e8c1ed2d568c..5dac61dc9a8ccf19fcc5254d3ef0cbef814c778f 100644
--- a/Source/bindings/scripts/code_generator_v8.pm
+++ b/Source/bindings/scripts/code_generator_v8.pm
@@ -2208,6 +2208,17 @@ sub GenerateParametersCheckExpression
             } else {
                 push(@andExpression, "V8${type}::hasInstance($value, info.GetIsolate(), worldType(info.GetIsolate()))");
             }
+        } elsif ($nonWrapperTypes{$type}) {
+            # Non-wrapper types are just objects: we don't distinguish type
+            # FIXME: If distinguishing non-wrapper type from primitive type,
+            # the non-wrapper type must appear *first* in the IDL file,
+            # since we're not adding a !IsObject check to primitive types.
+            # This can be avoided if compute overloads more sensibly.
+            if ($parameter->isNullable) {
+                push(@andExpression, "${value}->IsNull() || ${value}->IsObject()");
+            } else {
+                push(@andExpression, "${value}->IsObject()");
+            }
         }
 
         $parameterIndex++;