for r67  Face3 Removed centroid. 
for r67 
Face3
Removed centroid. 
akjava/gwt-three.js-test,sebasbaumh/gwt-three.js,sebasbaumh/gwt-three.js,akjava/gwt-three.js-test,sebasbaumh/gwt-three.js,akjava/gwt-three.js-test