Function script::mem::malloc_size_of_including_raw_self

pub unsafe fn malloc_size_of_including_raw_self<T: MallocSizeOf>(
    ops: &mut MallocSizeOfOps,
    obj: *const c_void
) -> usize

Used by codegen to include the pointer to the MallocSizeOf implementation of each IDL interface. This way we don’t have to find the most-derived interface of DOM objects by hand in code.