Summary:
@public
... and we initalize this in Surface.
We need this for requesting images with proper size/pixel-density, setup proper parameters for rasterizing CALayer's and rounding layout metric values.
Then we have to figure out how to wire this up with YGConfig.
Reviewed By: fkgozali
Differential Revision: D8475639
fbshipit-source-id: cec7af581b94efb4595dcf3f232252ce87a1fde3