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

src/effects/SkColorFilters.cpp

Index: src/effects/SkColorFilters.cpp
diff --git a/src/effects/SkColorFilters.cpp b/src/effects/SkColorFilters.cpp
index bee3a50f3b420a961c8ee41cfc9a3f7ef30e6c53..81d70a7ff9fa23a6d4f5647a9f306e0045adf910 100644
--- a/src/effects/SkColorFilters.cpp
+++ b/src/effects/SkColorFilters.cpp
@@ -87,7 +87,7 @@
 #endif
 
 #if SK_SUPPORT_GPU
-    virtual GrEffect* asNewEffect(GrContext*) const SK_OVERRIDE;
+    virtual GrEffectRef* asNewEffect(GrContext*) const SK_OVERRIDE;
 #endif
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkModeColorFilter)
 
@@ -409,7 +409,7 @@
     return ModeColorFilterEffect::Create(color, mode);
 }
 
-GrEffect* SkModeColorFilter::asNewEffect(GrContext*) const {
+GrEffectRef* SkModeColorFilter::asNewEffect(GrContext*) const {
     if (SkXfermode::kDst_Mode != fMode) {
         return ModeColorFilterEffect::Create(SkColor2GrColor(fColor), fMode);
     }