/usr/include/libgdata/gdata/services/ is in libgdata-dev 0.16.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/libgdata/gdata/services/calendar/
/usr/include/libgdata/gdata/services/calendar/gdata-calendar-calendar.h
/usr/include/libgdata/gdata/services/calendar/gdata-calendar-event.h
/usr/include/libgdata/gdata/services/calendar/gdata-calendar-feed.h
/usr/include/libgdata/gdata/services/calendar/gdata-calendar-query.h
/usr/include/libgdata/gdata/services/calendar/gdata-calendar-service.h
/usr/include/libgdata/gdata/services/contacts/
/usr/include/libgdata/gdata/services/contacts/gdata-contacts-contact.h
/usr/include/libgdata/gdata/services/contacts/gdata-contacts-group.h
/usr/include/libgdata/gdata/services/contacts/gdata-contacts-query.h
/usr/include/libgdata/gdata/services/contacts/gdata-contacts-service.h
/usr/include/libgdata/gdata/services/documents/
/usr/include/libgdata/gdata/services/documents/gdata-documents-document.h
/usr/include/libgdata/gdata/services/documents/gdata-documents-drawing.h
/usr/include/libgdata/gdata/services/documents/gdata-documents-entry.h
/usr/include/libgdata/gdata/services/documents/gdata-documents-enums.h
/usr/include/libgdata/gdata/services/documents/gdata-documents-feed.h
/usr/include/libgdata/gdata/services/documents/gdata-documents-folder.h
/usr/include/libgdata/gdata/services/documents/gdata-documents-pdf.h
/usr/include/libgdata/gdata/services/documents/gdata-documents-presentation.h
/usr/include/libgdata/gdata/services/documents/gdata-documents-query.h
/usr/include/libgdata/gdata/services/documents/gdata-documents-service.h
/usr/include/libgdata/gdata/services/documents/gdata-documents-spreadsheet.h
/usr/include/libgdata/gdata/services/documents/gdata-documents-text.h
/usr/include/libgdata/gdata/services/documents/gdata-documents-upload-query.h
/usr/include/libgdata/gdata/services/freebase/
/usr/include/libgdata/gdata/services/freebase/gdata-freebase-enums.h
/usr/include/libgdata/gdata/services/freebase/gdata-freebase-query.h
/usr/include/libgdata/gdata/services/freebase/gdata-freebase-result.h
/usr/include/libgdata/gdata/services/freebase/gdata-freebase-search-query.h
/usr/include/libgdata/gdata/services/freebase/gdata-freebase-search-result.h
/usr/include/libgdata/gdata/services/freebase/gdata-freebase-service.h
/usr/include/libgdata/gdata/services/freebase/gdata-freebase-topic-query.h
/usr/include/libgdata/gdata/services/freebase/gdata-freebase-topic-result.h
/usr/include/libgdata/gdata/services/picasaweb/
/usr/include/libgdata/gdata/services/picasaweb/gdata-picasaweb-album.h
/usr/include/libgdata/gdata/services/picasaweb/gdata-picasaweb-comment.h
/usr/include/libgdata/gdata/services/picasaweb/gdata-picasaweb-enums.h
/usr/include/libgdata/gdata/services/picasaweb/gdata-picasaweb-feed.h
/usr/include/libgdata/gdata/services/picasaweb/gdata-picasaweb-file.h
/usr/include/libgdata/gdata/services/picasaweb/gdata-picasaweb-query.h
/usr/include/libgdata/gdata/services/picasaweb/gdata-picasaweb-service.h
/usr/include/libgdata/gdata/services/picasaweb/gdata-picasaweb-user.h
/usr/include/libgdata/gdata/services/tasks/
/usr/include/libgdata/gdata/services/tasks/gdata-tasks-query.h
/usr/include/libgdata/gdata/services/tasks/gdata-tasks-service.h
/usr/include/libgdata/gdata/services/tasks/gdata-tasks-task.h
/usr/include/libgdata/gdata/services/tasks/gdata-tasks-tasklist.h
/usr/include/libgdata/gdata/services/youtube/
/usr/include/libgdata/gdata/services/youtube/gdata-youtube-category.h
/usr/include/libgdata/gdata/services/youtube/gdata-youtube-comment.h
/usr/include/libgdata/gdata/services/youtube/gdata-youtube-content.h
/usr/include/libgdata/gdata/services/youtube/gdata-youtube-credit.h
/usr/include/libgdata/gdata/services/youtube/gdata-youtube-enums.h
/usr/include/libgdata/gdata/services/youtube/gdata-youtube-query.h
/usr/include/libgdata/gdata/services/youtube/gdata-youtube-service.h
/usr/include/libgdata/gdata/services/youtube/gdata-youtube-state.h
/usr/include/libgdata/gdata/services/youtube/gdata-youtube-video.h