Fix scrolling view overlapping AppBarLayout

Happens when the CoL has fitSystemWindows=true,
but the children don't. This means that simply using
the ABL's height isn't enough, and we need to use
its bottom instead. Which makes more sense anyway
since we're pinned to its bottom.

BUG: 26150580
Change-Id: If8907f784e45cc0815a9c3fb17255ca2c993011c
1 file changed