https://bugs.webkit.org/show_bug.cgi?id=106033

Source/WebCore: 

Reviewed by Sam Weinig.

Test: TestWebKitAPI/Tests/mac/DOMNodeFromJSObject.mm.

* bindings/objc/DOM.mm:
(+[DOMNode _nodeFromJSWrapper:]): Added. If the given JSObjectRef is a wrapper for a Node,
returns the Objective-C wrapper for that node. Note that Objective-C wrappers are always
for the main world, regardless of which world the given JS wrapper comes from.
* bindings/objc/DOMPrivate.h: Added declaration of the above.

Tools: 

Added a test for +[DOMNode _nodeFromJSWrapper:].

Reviewed by Sam Weinig.

* TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj:
* TestWebKitAPI/Tests/mac/DOMNodeFromJSObject.mm: Added.
(TestWebKitAPI):
(TestWebKitAPI::TEST):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@138747 268f45cc-cd09-0410-ab3c-d52691b4dbfc