https://bugs.webkit.org/show_bug.cgi?id=75944

Reviewed by Adam Barth.

The spec for the [Supplemental] IDL:
http://dev.w3.org/2006/webapi/WebIDL/#dfn-supplemental-interface

Currently the [Supplemental] IDL is supported on attributes but not supported
on methods. This patch makes a change to support it.

Specifically, assume the following IDL:

    interface [Supplemental=X] Y {
        void func();
    }

Then the code generator generates the following V8X.cpp.

    void funcCallback(Arguments& args) {
        X* imp = V8X::toNative(args.Holder());
        Y::func(imp);
    }

Similar code is also generated for JS, ObjC, GObject and CPP bindings.

Test: bindings/scripts/test/TestSupplemental.idl

* bindings/scripts/CodeGeneratorCPP.pm: Modified as described above.
(GenerateImplementation):
* bindings/scripts/CodeGeneratorGObject.pm: Ditto.
(GenerateFunction):
* bindings/scripts/CodeGeneratorJS.pm: Ditto.
(GenerateParametersCheck):
* bindings/scripts/CodeGeneratorObjC.pm: Ditto.
(GenerateImplementation):
* bindings/scripts/CodeGeneratorV8.pm: Ditto.
(GenerateFunctionCallString):
* bindings/scripts/generate-bindings.pl: Ditto.

* bindings/scripts/test/TestSupplemental.idl: Added test cases for [Supplemental] methods.

* bindings/scripts/test/CPP/WebDOMTestInterface.cpp: Updated the test result.
(WebDOMTestInterface::supplementalMethod1):
(WebDOMTestInterface::supplementalMethod2):
* bindings/scripts/test/CPP/WebDOMTestInterface.h: Ditto.
* bindings/scripts/test/GObject/WebKitDOMTestInterface.cpp: Ditto.
(webkit_dom_test_interface_supplemental_method1):
(webkit_dom_test_interface_supplemental_method2):
* bindings/scripts/test/GObject/WebKitDOMTestInterface.h: Ditto.
* bindings/scripts/test/JS/JSTestInterface.cpp: Ditto.
(WebCore::JSTestInterfacePrototype::getOwnPropertySlot):
(WebCore::JSTestInterfacePrototype::getOwnPropertyDescriptor):
(WebCore::jsTestInterfacePrototypeFunctionSupplementalMethod1):
(WebCore::jsTestInterfacePrototypeFunctionSupplementalMethod2):
* bindings/scripts/test/JS/JSTestInterface.h: Ditto.
* bindings/scripts/test/ObjC/DOMTestInterface.h: Ditto.
* bindings/scripts/test/ObjC/DOMTestInterface.mm: Ditto.
(-[DOMTestInterface supplementalMethod1]):
(-[DOMTestInterface supplementalMethod2:objArg:]):
* bindings/scripts/test/V8/V8TestInterface.cpp: Ditto.
(WebCore::TestInterfaceInternal::supplementalMethod1Callback):
(WebCore::TestInterfaceInternal::supplementalMethod2Callback):
(WebCore::ConfigureV8TestInterfaceTemplate):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@104643 268f45cc-cd09-0410-ab3c-d52691b4dbfc