Atomically increments the reference count of js_result
by one. This
function is MT-safe and may be called from any thread.
Atomically decrements the reference count of js_result
by one. If the
reference count drops to 0, all memory allocated by the #WebKitJavascriptResult is
released. This function is MT-safe and may be called from any
thread.
Get the #JSCValue of
js_result
.