Revert "Graphics: Make MeasureString virtual for testability."
Revert "Graphics: Make MeasureString virtual for testability."

This reverts commit f80b8052fe07c7b2732060225fae26d28e1b2c6b.

bbqchickenrobot/Eto-1,PowerOfCode/Eto,bbqchickenrobot/Eto-1,l8s/Eto,bbqchickenrobot/Eto-1,l8s/Eto,l8s/Eto,PowerOfCode/Eto,PowerOfCode/Eto