/usr/share/kde4/apps/plasma/plasmoids/ is in plasma-widget-googlecalendar 1.2-0ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/kde4/apps/plasma/plasmoids/gcal/
/usr/share/kde4/apps/plasma/plasmoids/gcal/contents/
/usr/share/kde4/apps/plasma/plasmoids/gcal/contents/code/
/usr/share/kde4/apps/plasma/plasmoids/gcal/contents/code/main.py
/usr/share/kde4/apps/plasma/plasmoids/gcal/contents/code/makepyform.sh
/usr/share/kde4/apps/plasma/plasmoids/gcal/contents/code/settings.py
/usr/share/kde4/apps/plasma/plasmoids/gcal/contents/code/settings.qrc
/usr/share/kde4/apps/plasma/plasmoids/gcal/contents/code/settings.ui
/usr/share/kde4/apps/plasma/plasmoids/gcal/contents/code/settings_rc.py
/usr/share/kde4/apps/plasma/plasmoids/gcal/contents/code/settingsform.py
/usr/share/kde4/apps/plasma/plasmoids/gcal/metadata.desktop