Summary: If there is a single child which is flex grow and flex shrink then instead of measuring and then shrinking we can just set the flex basis to zero as we know the final result will be that the child take up all remaining space.
Reviewed By: gkassabli
Differential Revision: D4147298
fbshipit-source-id: 8416508a31e8d317bf59d956abdbe5760b55bb6d
502f3c7010