/usr/ is in libaccount-plugin-1.0-dev 0.1.7~+14.04.20140211.2-0ubuntu4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/pkgconfig/
/usr/lib/pkgconfig/account-plugin.pc
/usr/share/
/usr/share/gir-1.0/
/usr/share/gir-1.0/AccountPlugin-1.0.gir
/usr/share/vala/
/usr/share/vala/vapi/
/usr/share/vala/vapi/AccountPlugin.vapi
/usr/share/doc/
/usr/share/doc/libaccount-plugin-1.0-dev/
/usr/share/doc/libaccount-plugin-1.0-dev/copyright
/usr/include/
/usr/include/libaccount-plugin/
/usr/include/libaccount-plugin/plugin.h
/usr/include/libaccount-plugin/module.h
/usr/include/libaccount-plugin/account-plugin.h
/usr/include/libaccount-plugin/client.h
/usr/include/libaccount-plugin/oauth-plugin.h
/usr/include/libaccount-plugin/application-plugin.h
/usr/lib/libaccount-plugin-1.0.so
/usr/share/doc/libaccount-plugin-1.0-dev/changelog.Debian.gz