/usr/share/doc/libwebkitgtk-3.0-dev/changelog.Debian.gz is in libwebkitgtk-3.0-dev 2.4.10-0ubuntu0.14.04.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libwebkitgtk-3.0-dev/../libjavascriptcoregtk-3.0-0/changelog.Debian.gz