/usr/share/doc/libgconf-bridge-dev/html is in libgconf-bridge-dev 0.1-2.2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libgconf-bridge-dev/../../gtk-doc/html/libgconf-bridge
/usr/share/doc/libgconf-bridge-dev/../../gtk-doc/html/libgconf-bridge