/usr/share/gtk-doc/ is in gstreamer0.10-plugins-ugly-doc 0.10.18.3-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/ch01.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/ch02.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-0.10.devhelp2
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-a52dec.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-amrnbdec.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-amrnbenc.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-amrwbdec.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-cdiocddasrc.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-lame.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-lamemp3enc.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-mad.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-mp3parse.html
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/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-plugin-amrnb.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-plugin-amrwbdec.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-plugin-asf.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-plugin-cdio.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-plugin-dvdlpcmdec.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-plugin-dvdread.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-plugin-dvdsub.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-plugin-iec958.html
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/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-plugin-mad.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-plugin-mpeg2dec.html
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/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-rademux.html
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/gst-plugins-ugly-plugins-rdtmanager.html
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/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/style.css
/usr/share/gtk-doc/html/gst-plugins-ugly-plugins-0.10/up.png