Canvas2D Performance: fix the bottleneck of hasInstance in JS binding -- TypeChecking Interface

Source/bindings/tests/idls/core/TestObject.idl

Index: Source/bindings/tests/idls/core/TestObject.idl
diff --git a/Source/bindings/tests/idls/core/TestObject.idl b/Source/bindings/tests/idls/core/TestObject.idl
index 44d9cae814a9524b3612a90702f9c87bae18ae1b..72f2e22f6b52d1707364935248755761adb6f79b 100644
--- a/Source/bindings/tests/idls/core/TestObject.idl
+++ b/Source/bindings/tests/idls/core/TestObject.idl
@@ -552,4 +552,8 @@ interface TestObject {
     [ImplementedInPrivateScript, OnlyExposedToPrivateScript] short methodForPrivateScriptOnly(short value1, short value2);
     [ImplementedInPrivateScript, OnlyExposedToPrivateScript] attribute DOMString attributeForPrivateScriptOnly;
     [ImplementedInPrivateScript] attribute TestEnum enumForPrivateScript;
+
+    [TypeChecking=Interface] void useToImpl4ArgumentsCheckingIfPossibleWithOptionalArg(Node node1, optional Node node2);

[Jens Widell, 2014/10/10 09:26:02]

Nit: Move them up to the other [TypeChecking=Interface] methods?

[yunchao, 2014/10/10 10:36:11]

Done.

+    [TypeChecking=Interface] void useToImpl4ArgumentsCheckingIfPossibleWithNullableArg(Node node1, Node? node2);
+    [TypeChecking=Interface] void useToImpl4ArgumentsCheckingIfPossibleWithUndefinedArg(Node node1, [Default=Undefined] optional Node node2);
 };