/usr/lib/x86_64-linux-gnu/qt5/qml/Ubuntu/Components/Themes/qmldir is in ubuntu-ui-toolkit-theme 0.1.46+14.04.20140408.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | module Ubuntu.Components.Themes
Palette 0.1 Palette.qml
PaletteValues 0.1 PaletteValues.qml
|