Fix FragmentTransaction.show() to show the fragment.

Bug 37413327

When there was an animation and the fragment transaction wasn't
optimized, the fragment visiiblity wasn't being set during show().

Test: I0fd4029a02d6c9f082011bf56f0d3c8245803f68
Change-Id: Idc2c74ae2fc4759a755a5988ce6ca1b39ef8d554
1 file changed