Fix crash in Scroller.
Fix crash in Scroller.

Looks like a leftover usage of Elements, the instanceof check got converted but not the cast.

tomfisher/tripleplay,joansmith/tripleplay,joansmith/tripleplay,tomfisher/tripleplay,joansmith/tripleplay,joansmith/tripleplay,tomfisher/tripleplay,tomfisher/tripleplay,tomfisher/tripleplay,joansmith/tripleplay