/usr/ is in golang-protobuf-extensions-dev 0+git20150513.fc2b8d3-3.
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/usr/share/gocode/src/github.com/matttproud/golang_protobuf_extensions/pbutil/
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/usr/share/gocode/src/github.com/matttproud/golang_protobuf_extensions/ext/
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/usr/share/doc/
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/usr/share/doc/golang-protobuf-extensions-dev/copyright
/usr/share/doc/golang-protobuf-extensions-dev/README.md
/usr/share/doc/golang-protobuf-extensions-dev/changelog.Debian.gz