/usr/share/eclipse/dropins/ is in eclipse-mylyn-builds-hudson 3.12.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/eclipse/dropins/mylyn-builds-hudson/
/usr/share/eclipse/dropins/mylyn-builds-hudson/eclipse/
/usr/share/eclipse/dropins/mylyn-builds-hudson/eclipse/features/
/usr/share/eclipse/dropins/mylyn-builds-hudson/eclipse/features/org.eclipse.mylyn.hudson_1.4.0.201707272242//
/usr/share/eclipse/dropins/mylyn-builds-hudson/eclipse/features/org.eclipse.mylyn.hudson_1.4.0.201707272242/feature.properties
/usr/share/eclipse/dropins/mylyn-builds-hudson/eclipse/features/org.eclipse.mylyn.hudson_1.4.0.201707272242/feature.xml
/usr/share/eclipse/dropins/mylyn-builds-hudson/eclipse/plugins/
/usr/share/eclipse/dropins/mylyn-builds-hudson/eclipse/plugins/com.google.gson_2.4.0.jar
/usr/share/eclipse/dropins/mylyn-builds-hudson/eclipse/plugins/org.apache.httpcomponents.httpclient_4.5.3.jar
/usr/share/eclipse/dropins/mylyn-builds-hudson/eclipse/plugins/org.apache.httpcomponents.httpcore_4.4.6.jar
/usr/share/eclipse/dropins/mylyn-builds-hudson/eclipse/plugins/org.eclipse.mylyn.hudson.core_1.4.0.201707272242.jar
/usr/share/eclipse/dropins/mylyn-builds-hudson/eclipse/plugins/org.eclipse.mylyn.hudson.ui_1.4.0.201707272242.jar