/usr/include/libgdata/gdata/services/documents/ is in libgdata-dev 0.16.1-1.
This file is owned by root:root, with mode 0o755.
..
/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