Always use raster pipeline for radial gradients

Change-Id: Id4c9ed45c28becf0e25ed9ff1b3380c7ca65aa4b
Reviewed-on: https://skia-review.googlesource.com/25363
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
1 file changed