/usr/ is in libjs-excanvas 0.r3-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/javascript/
/usr/share/javascript/excanvas/
/usr/share/javascript/excanvas/excanvas.js
/usr/share/javascript/excanvas/excanvas.min.js
/usr/share/doc/
/usr/share/doc/libjs-excanvas/
/usr/share/doc/libjs-excanvas/AUTHORS
/usr/share/doc/libjs-excanvas/README.Debian
/usr/share/doc/libjs-excanvas/copyright
/usr/share/doc/libjs-excanvas/examples/
/usr/share/doc/libjs-excanvas/examples/example1.html
/usr/share/doc/libjs-excanvas/examples/example2.html
/usr/share/doc/libjs-excanvas/examples/example3.html
/usr/share/doc/libjs-excanvas/examples/ff.jpg
/usr/share/doc/libjs-excanvas/examples/testcases/
/usr/share/doc/libjs-excanvas/examples/testcases/arc.html
/usr/share/doc/libjs-excanvas/examples/testcases/clearpath.html
/usr/share/doc/libjs-excanvas/examples/testcases/drawimage.html
/usr/share/doc/libjs-excanvas/examples/testcases/gradient.html
/usr/share/doc/libjs-excanvas/examples/testcases/gradient2.html
/usr/share/doc/libjs-excanvas/examples/testcases/linewidth.html
/usr/share/doc/libjs-excanvas/examples/testcases/overflow.html
/usr/share/doc/libjs-excanvas/examples/testcases/quadraticcurve.html
/usr/share/doc/libjs-excanvas/examples/testcases/resizing.html
/usr/share/doc/libjs-excanvas/examples/testcases/saverestorepath.html
/usr/share/doc/libjs-excanvas/examples/testcases/stroke-scale-rotate.html
/usr/share/doc/libjs-excanvas/examples/testcases/stroke-should-not-close-path.html
/usr/share/doc/libjs-excanvas/changelog.Debian.gz
/usr/share/javascript/excanvas/excanvas.compiled.js