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

src/effects/gradients/SkTwoPointConicalGradient.cpp

Index: src/effects/gradients/SkTwoPointConicalGradient.cpp
diff --git a/src/effects/gradients/SkTwoPointConicalGradient.cpp b/src/effects/gradients/SkTwoPointConicalGradient.cpp
index 6678000c90f83f7e5ec8bcc5a52fe8acf5320ffe..4421b90a3ae8938703ea731680ab6603fdb2a3d4 100644
--- a/src/effects/gradients/SkTwoPointConicalGradient.cpp
+++ b/src/effects/gradients/SkTwoPointConicalGradient.cpp
@@ -396,7 +396,7 @@
 
 bool SkTwoPointConicalGradient::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;
 }