/usr/ is in libmission-control-plugins-dev 1:5.16.3-1ubuntu6.
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..
/usr/share/
/usr/share/doc/
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/mission-control-plugins.pc
/usr/include/
/usr/include/mission-control-5.5/
/usr/include/mission-control-5.5/mission-control-plugins/
/usr/include/mission-control-5.5/mission-control-plugins/request-policy.h
/usr/include/mission-control-5.5/mission-control-plugins/debug.h
/usr/include/mission-control-5.5/mission-control-plugins/dbus-acl.h
/usr/include/mission-control-5.5/mission-control-plugins/account.h
/usr/include/mission-control-5.5/mission-control-plugins/dispatch-operation-policy.h
/usr/include/mission-control-5.5/mission-control-plugins/dispatch-operation.h
/usr/include/mission-control-5.5/mission-control-plugins/mcp-signals-marshal.h
/usr/include/mission-control-5.5/mission-control-plugins/mission-control-plugins.h
/usr/include/mission-control-5.5/mission-control-plugins/request.h
/usr/include/mission-control-5.5/mission-control-plugins/account-storage.h
/usr/include/mission-control-5.5/mission-control-plugins/loader.h
/usr/share/doc/libmission-control-plugins-dev
/usr/lib/x86_64-linux-gnu/libmission-control-plugins.so