/usr/lib/x86_64-linux-gnu/cairo/libcairo-trace.so.0 is in cairo-perf-utils 1.13.0~20140204-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/cairo/libcairo-trace.so.0.0.0