Support view transformations when positioning floating CAB

Bug: 24088745

Use ViewGroup#getChildVisibleRect to transform the reported content
rect into the coordinate system of the root view. This allows the
floating CAB to be positioned correctly for views that may have a
scale (or other transforms) applied.

Change-Id: Ia6733a461b44070e7f6bab42f0b6fe2aed6870e5
1 file changed