Function cef_shared_process_message_builder_create 

pub unsafe extern "C" fn cef_shared_process_message_builder_create(
    name: *const cef_string_t,
    byte_size: usize,
) -> *mut cef_shared_process_message_builder_t

Creates a new cef_shared_process_message_builder_t with the specified |name| and shared memory region of specified |byte_size|.