/usr/share/gtk-doc/ is in libgrss-dev 0.7.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/libgrss/
/usr/share/gtk-doc/html/libgrss/FeedAtomHandler.html
/usr/share/gtk-doc/html/libgrss/FeedHandler.html
/usr/share/gtk-doc/html/libgrss/FeedPieHandler.html
/usr/share/gtk-doc/html/libgrss/FeedRssHandler.html
/usr/share/gtk-doc/html/libgrss/FeedsOpmlGroupHandler.html
/usr/share/gtk-doc/html/libgrss/FeedsXbelGroupHandler.html
/usr/share/gtk-doc/html/libgrss/FeedsXoxoGroupHandler.html
/usr/share/gtk-doc/html/libgrss/GrssFeedAtomFormatter.html
/usr/share/gtk-doc/html/libgrss/GrssFeedChannel.html
/usr/share/gtk-doc/html/libgrss/GrssFeedEnclosure.html
/usr/share/gtk-doc/html/libgrss/GrssFeedFormatter.html
/usr/share/gtk-doc/html/libgrss/GrssFeedItem.html
/usr/share/gtk-doc/html/libgrss/GrssFeedParser.html
/usr/share/gtk-doc/html/libgrss/GrssFeedRssFormatter.html
/usr/share/gtk-doc/html/libgrss/GrssFeedsGroup.html
/usr/share/gtk-doc/html/libgrss/GrssFeedsGroupHandler.html
/usr/share/gtk-doc/html/libgrss/GrssFeedsPool.html
/usr/share/gtk-doc/html/libgrss/GrssFeedsPublisher.html
/usr/share/gtk-doc/html/libgrss/GrssFeedsPubsubhubbubSubscriber.html
/usr/share/gtk-doc/html/libgrss/GrssFeedsRsscloudSubscriber.html
/usr/share/gtk-doc/html/libgrss/GrssFeedsStore.html
/usr/share/gtk-doc/html/libgrss/GrssFeedsSubscriber.html
/usr/share/gtk-doc/html/libgrss/GrssFeedsSubscriberHandler.html
/usr/share/gtk-doc/html/libgrss/GrssPerson.html
/usr/share/gtk-doc/html/libgrss/NSHandler.html
/usr/share/gtk-doc/html/libgrss/annotation-glossary.html
/usr/share/gtk-doc/html/libgrss/ch01.html
/usr/share/gtk-doc/html/libgrss/home.png
/usr/share/gtk-doc/html/libgrss/index.html
/usr/share/gtk-doc/html/libgrss/index.sgml
/usr/share/gtk-doc/html/libgrss/ix01.html
/usr/share/gtk-doc/html/libgrss/ix02.html
/usr/share/gtk-doc/html/libgrss/ix03.html
/usr/share/gtk-doc/html/libgrss/left-insensitive.png
/usr/share/gtk-doc/html/libgrss/left.png
/usr/share/gtk-doc/html/libgrss/libgrss-base.html
/usr/share/gtk-doc/html/libgrss/libgrss-essentials.html
/usr/share/gtk-doc/html/libgrss/libgrss-feed-marshal.html
/usr/share/gtk-doc/html/libgrss/libgrss-feeds-subscriber-private.html
/usr/share/gtk-doc/html/libgrss/libgrss-useful.html
/usr/share/gtk-doc/html/libgrss/libgrss-utils.html
/usr/share/gtk-doc/html/libgrss/libgrss.devhelp2
/usr/share/gtk-doc/html/libgrss/libgrss.html
/usr/share/gtk-doc/html/libgrss/license.html
/usr/share/gtk-doc/html/libgrss/right-insensitive.png
/usr/share/gtk-doc/html/libgrss/right.png
/usr/share/gtk-doc/html/libgrss/style.css
/usr/share/gtk-doc/html/libgrss/up-insensitive.png
/usr/share/gtk-doc/html/libgrss/up.png