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

src/effects/gradients/SkTwoPointConicalGradient_gpu.h

Index: src/effects/gradients/SkTwoPointConicalGradient_gpu.h
diff --git a/src/effects/gradients/SkTwoPointConicalGradient_gpu.h b/src/effects/gradients/SkTwoPointConicalGradient_gpu.h
index 4471ffc89c60db90ed7edd523fc11e75ee95231c..2b0f0612d782838bb99a8157694f659000ca72cc 100644
--- a/src/effects/gradients/SkTwoPointConicalGradient_gpu.h
+++ b/src/effects/gradients/SkTwoPointConicalGradient_gpu.h
@@ -10,7 +10,7 @@
 
 #include "SkGradientShaderPriv.h"
 
-class GrEffect;
+class GrEffectRef;
 class SkTwoPointConicalGradient;
 
 namespace Gr2PtConicalGradientEffect {
@@ -18,8 +18,8 @@
      * Creates an effect that produces a two point conical gradient based on the
      * shader passed in.
      */
-    GrEffect* Create(GrContext* ctx, const SkTwoPointConicalGradient& shader,
-                     SkShader::TileMode tm, const SkMatrix* localMatrix);
+    GrEffectRef* Create(GrContext* ctx, const SkTwoPointConicalGradient& shader,
+                        SkShader::TileMode tm, const SkMatrix* localMatrix);
 };
 
 #endif