Canvas2D Performance: fix the bottleneck of hasInstance during JS binding -- overloading

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..f349a7fcf9b754de99eb116a9f7b9ead117ba6aa 100644
--- a/Source/bindings/tests/idls/core/TestObject.idl
+++ b/Source/bindings/tests/idls/core/TestObject.idl
@@ -552,4 +552,18 @@ interface TestObject {
     [ImplementedInPrivateScript, OnlyExposedToPrivateScript] short methodForPrivateScriptOnly(short value1, short value2);
     [ImplementedInPrivateScript, OnlyExposedToPrivateScript] attribute DOMString attributeForPrivateScriptOnly;
     [ImplementedInPrivateScript] attribute TestEnum enumForPrivateScript;
+
+    // remove redundant type checking
+    [TypeChecking=Interface] void typeCheckingMaybeRedundantForOverloadingMethodsA(Node a, long b);
+    [TypeChecking=Interface] void typeCheckingMaybeRedundantForOverloadingMethodsA(long a, long b);
+    [TypeChecking=Interface] void typeCheckingMaybeRedundantForOverloadingMethodsB(Node a);
+    [TypeChecking=Interface] void typeCheckingMaybeRedundantForOverloadingMethodsB(long a, long b);
+    [TypeChecking=Interface] void typeCheckingMaybeRedundantForOverloadingMethodsC(Node a);
+    [TypeChecking=Interface] void typeCheckingMaybeRedundantForOverloadingMethodsC(long a, optional long b);
+    [TypeChecking=Interface] void typeCheckingMaybeRedundantForOverloadingMethodsD(Node a, Node b);
+    [TypeChecking=Interface] void typeCheckingMaybeRedundantForOverloadingMethodsD(Node a, long b);
+    [TypeChecking=Interface] void typeCheckingMaybeRedundantForOverloadingMethodsE(Node a, Node b);
+    [TypeChecking=Interface] void typeCheckingMaybeRedundantForOverloadingMethodsE(Node a, optional long b);
+    [TypeChecking=Interface] void typeCheckingMaybeRedundantForOverloadingMethodsF(optional Node a);
+    [TypeChecking=Interface] void typeCheckingMaybeRedundantForOverloadingMethodsF(Document a, optional Node b);
 };