/usr/share/maven-repo/com/google/javascript/closure-compiler/v20130227/closure-compiler-v20130227.jar is in libclosure-compiler-java 20130227+dfsg1-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/com/google/javascript/closure-compiler/v20130227/../../../../../../java/closure-compiler-v20130227.jar