/usr/lib/x86_64-linux-gnu/libEGL_mesa.so.0 is in libegl-mesa0 18.0.0~rc5-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libEGL_mesa.so.0.0.0
/usr/lib/x86_64-linux-gnu/libEGL_mesa.so.0.0.0