Summary:
A few fixes.
1. We were ignoring start and end inputs, they are now sent to desktop
2. we were computing our own version of the resolved (computed ) values for border padding and margin. We are now using the correct about from litho getLayoutX
Removed some code duplication
Unfortunatley getLayoutBorderWidth is not available in open source yet so will need to land that first
Reviewed By: adityasharat
Differential Revision: D50496369
fbshipit-source-id: 7960a5d338adb40175f48982150665e046688fe1