/usr/share/eclipse/dropins/ is in eclipse-cdt-qt 8.6.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/eclipse/dropins/cdt-qt/
/usr/share/eclipse/dropins/cdt-qt/eclipse/
/usr/share/eclipse/dropins/cdt-qt/eclipse/features/
/usr/share/eclipse/dropins/cdt-qt/eclipse/features/org.eclipse.cdt.qt_8.6.0.dist/
/usr/share/eclipse/dropins/cdt-qt/eclipse/features/org.eclipse.cdt.qt_8.6.0.dist/epl-v10.html
/usr/share/eclipse/dropins/cdt-qt/eclipse/features/org.eclipse.cdt.qt_8.6.0.dist/feature.properties
/usr/share/eclipse/dropins/cdt-qt/eclipse/features/org.eclipse.cdt.qt_8.6.0.dist/feature.xml
/usr/share/eclipse/dropins/cdt-qt/eclipse/features/org.eclipse.cdt.qt_8.6.0.dist/license.html
/usr/share/eclipse/dropins/cdt-qt/eclipse/plugins/
/usr/share/eclipse/dropins/cdt-qt/eclipse/plugins/org.eclipse.cdt.qt.core_1.1.0.dist.jar
/usr/share/eclipse/dropins/cdt-qt/eclipse/plugins/org.eclipse.cdt.qt.ui_1.1.0.dist.jar