Fix 3338368: Fix bounds calculation for recent apps view

The calculation for determine the content view's bounds
was mistakenly using the position of the view in the immediate
parent (glow view), which wrapped it exactly in the vertical
direction. The code now uses the glow view's vertical
position in its parent to determine the position.

Change-Id: I07768eb3446fde851699de1c1d4e958bc16d98bb