Add null-correctness checking to [StrictTypeChecking] methods

Source/core/svg/SVGLengthList.idl

Index: Source/core/svg/SVGLengthList.idl
diff --git a/Source/core/svg/SVGLengthList.idl b/Source/core/svg/SVGLengthList.idl
index 2e66d4384c3f994888174ddc3c969390a36728d0..bc324889a01e1e967a8dea8f233e71c565e58c37 100644
--- a/Source/core/svg/SVGLengthList.idl
+++ b/Source/core/svg/SVGLengthList.idl
@@ -26,16 +26,16 @@
 
 [
     ImplementedAs=SVGLengthListTearOff,
-    SetReference(SVGElement contextElement)
+    SetReference(SVGElement contextElement),

[kouhei (in TOK), 2014/01/17 04:28:45]

Is this intentional?

 ] interface SVGLengthList {
     readonly attribute unsigned long numberOfItems;
 
     [RaisesException] void clear();
-    [StrictTypeChecking, RaisesException] SVGLength initialize(SVGLength item);
+    [StrictTypeChecking, RaisesException] SVGLength initialize(SVGLength? item);

[kouhei (in TOK), 2014/01/17 04:28:45]

No ? here.

     [StrictTypeChecking, RaisesException] SVGLength getItem(unsigned long index);
-    [StrictTypeChecking, RaisesException] SVGLength insertItemBefore(SVGLength item, unsigned long index);
-    [StrictTypeChecking, RaisesException] SVGLength replaceItem(SVGLength item, unsigned long index);
+    [StrictTypeChecking, RaisesException] SVGLength insertItemBefore(SVGLength? item, unsigned long index);

[kouhei (in TOK), 2014/01/17 04:28:45]

no ? here.

+    [StrictTypeChecking, RaisesException] SVGLength replaceItem(SVGLength? item, unsigned long index);

[kouhei (in TOK), 2014/01/17 04:28:45]

Ditto

     [StrictTypeChecking, RaisesException] SVGLength removeItem(unsigned long index);
-    [StrictTypeChecking, RaisesException] SVGLength appendItem(SVGLength item);
+    [StrictTypeChecking, RaisesException] SVGLength appendItem(SVGLength? item);

[kouhei (in TOK), 2014/01/17 04:28:45]

Ditto

 };