Fix rounded rect drawing code for CardViews on pre JB devices.

This CL fixes the rounding up issue when drawing rounded rect background
for CardView. CornerRadius was incremented to create an overlap between
the edges and the center, but it was affecting the center drawing as well.

Bug: 26473611
Change-Id: I8f6c205357e235b629b165c2c371b7174548e5ab
1 file changed