/usr/share/maliit/plugins/com/ is in ubuntu-keyboard-japanese 0.99.trunk.phablet2+16.04.20160226.1-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/maliit/plugins/com/ubuntu/
/usr/share/maliit/plugins/com/ubuntu/lib/
/usr/share/maliit/plugins/com/ubuntu/lib/ja/
/usr/share/maliit/plugins/com/ubuntu/lib/ja/Keyboard_ja.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/Keyboard_ja_email.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/Keyboard_ja_url.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/Keyboard_ja_url_search.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/CommitKey.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/CursorKey.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/DomainKey.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/FlickArea.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/FlickCharKey.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/FlickPop.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/FlickPopKey.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/KanaSwitchKey.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/ModifierKey.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/UndoKey.qml
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/key_constants.js
/usr/share/maliit/plugins/com/ubuntu/lib/ja/keys/modifier.js
/usr/share/maliit/plugins/com/ubuntu/lib/ja/libjaplugin.so