Revert of Make GrDrawState and GrPaint take GrEffect* instead of GrEffectRef*.

src/effects/gradients/SkRadialGradient.cpp

Index: src/effects/gradients/SkRadialGradient.cpp
diff --git a/src/effects/gradients/SkRadialGradient.cpp b/src/effects/gradients/SkRadialGradient.cpp
index 38e6f33b38be1032f60c97d42e926a69317eca12..f0cb1612b056dd3dfccffef8145541b7e22d8873 100644
--- a/src/effects/gradients/SkRadialGradient.cpp
+++ b/src/effects/gradients/SkRadialGradient.cpp
@@ -591,7 +591,7 @@
 
 bool SkRadialGradient::asNewEffect(GrContext* context, const SkPaint& paint,
                                    const SkMatrix* localMatrix, GrColor* grColor,
-                                   GrEffect** grEffect) const {
+                                   GrEffectRef** grEffect) const {
     SkDEBUGFAIL("Should not call in GPU-less build");
     return false;
 }