/usr/share/eclipse/ is in eclipse-mylyn-tasks-trac 3.12.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/eclipse/dropins/
/usr/share/eclipse/dropins/mylyn-tasks-trac/
/usr/share/eclipse/dropins/mylyn-tasks-trac/eclipse/
/usr/share/eclipse/dropins/mylyn-tasks-trac/eclipse/features/
/usr/share/eclipse/dropins/mylyn-tasks-trac/eclipse/features/org.eclipse.mylyn.trac_feature_3.12.0.201707272240//
/usr/share/eclipse/dropins/mylyn-tasks-trac/eclipse/features/org.eclipse.mylyn.trac_feature_3.12.0.201707272240/feature.properties
/usr/share/eclipse/dropins/mylyn-tasks-trac/eclipse/features/org.eclipse.mylyn.trac_feature_3.12.0.201707272240/feature.xml
/usr/share/eclipse/dropins/mylyn-tasks-trac/eclipse/plugins/
/usr/share/eclipse/dropins/mylyn-tasks-trac/eclipse/plugins/com.google.gson_2.4.0.jar
/usr/share/eclipse/dropins/mylyn-tasks-trac/eclipse/plugins/org.eclipse.mylyn.trac.core_3.12.0.201707272240.jar
/usr/share/eclipse/dropins/mylyn-tasks-trac/eclipse/plugins/org.eclipse.mylyn.trac.ui_3.12.0.201707272240.jar