Revert of removing GrDrawEffect

src/gpu/effects/GrSimpleTextureEffect.h

Index: src/gpu/effects/GrSimpleTextureEffect.h
diff --git a/src/gpu/effects/GrSimpleTextureEffect.h b/src/gpu/effects/GrSimpleTextureEffect.h
index e81dd86cb27ece828ef482ddb9a26ce60bd1141d..49e3d7a843696178b5d5709faae8c8932f67222e 100644
--- a/src/gpu/effects/GrSimpleTextureEffect.h
+++ b/src/gpu/effects/GrSimpleTextureEffect.h
@@ -71,7 +71,7 @@
     }
 
     virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE {
-        const GrSimpleTextureEffect& ste = other.cast<GrSimpleTextureEffect>();
+        const GrSimpleTextureEffect& ste = CastEffect<GrSimpleTextureEffect>(other);
         return this->hasSameTextureParamsMatrixAndSourceCoords(ste);
     }