/usr/src/binutils/debian/libbinutils.shlibs.in is in binutils-source 2.30-15ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | libbfd @VER@-system@DATE_EXT@ libbinutils (>= @DEB_UVER@), libbinutils (<< @DEB_NVER@)
libopcodes @VER@-system@DATE_EXT@ libbinutils (>= @DEB_UVER@), libbinutils (<< @DEB_NVER@)
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