Create a new cef_v8value_t object of type function. This function should
only be called from within the scope of a cef_render_process_handler_t,
cef_v8handler_t or cef_v8accessor_t callback, or in combination with calling
enter() and exit() on a stored cef_v8context_t reference.
Create a new cef_v8value_t object of type function. This function should only be called from within the scope of a cef_render_process_handler_t, cef_v8handler_t or cef_v8accessor_t callback, or in combination with calling enter() and exit() on a stored cef_v8context_t reference.