Activating WebGL on the WebKit framework

I have been exploring the google body browser from one of their labs.

Really fun and educational.

http://bodybrowser.googlelabs.com/

It uses WebGL. The instructions are simple for the WebKit browser and simply requires to set a user property using the following command from a Mac OS X terminal.

defaults write com.apple.Safari WebKitWebGLEnabled -bool YES

I am wondering, how one would enable WebGL using the simple code below?

Bruno

(defun load-webkit ()
  (objc:with-autorelease-pool ()
   (objc:invoke
   (objc:invoke
   "NSBundle" "bundleWithPath:"
   (objc:invoke
   (objc:invoke "NSString" "stringWithString:" "/System/Library/Frameworks/WebKit.framework/")
   "stringByStandardizingPath"))
   "load")))

(defun get-web-view (url)
  (objc:with-autorelease-pool ()
   (let* ((request
   (objc:invoke "NSURLRequest" "requestWithURL:" (objc:invoke "NSURL" "URLWithString:" url)))
   (web-view
   (make-instance 'capi:cocoa-view-pane :view-class "WebView"
   :init-function
   #'(lambda (pane view)
   (declare (ignore pane))
   (setf view (objc:invoke view "init"))
   (objc:invoke (objc:invoke view "mainFrame") "loadRequest:" request)
   view))))
   (capi:contain web-view)
   web-view)))

(load-webkit)

;(get-web-view "http://bodybrowser.googlelabs.com/")