Select highlights on touchend event

iOS doesn't fire mousedown on the first tap. As the DOM
is modified it only fires mouseover/mouseenter. Listen to
touchend as well so that highlights are selected with one
tap.

Bug: 66999
Change-Id: Ic8ed31291bdd1404aa2f1d1c97c6f4734e8459e2
Merge "Select highlights on touchend event"