Comment # 1 on bug 96350 from leoxsliu@gmail.com

First, the change is nothing to do with DRI3.
Second, the change removing "NOT_IMPLEMENTED" is wayland display should be
opened with DRM code path, and it's already implemented. the code here is not
general switch to turn on the wayland support on vaapi, it's just one of the
steps to complete that support and which has been implemented. Sorry for the
confusion.