Switch GrEffect::onIsEqual signature back to GrEffect from GrEffectRef.

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/7188046

git-svn-id: http://skia.googlecode.com/svn/trunk@7326 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/effects/GrConfigConversionEffect.cpp b/src/gpu/effects/GrConfigConversionEffect.cpp
index 2271b10..4c4d079 100644
--- a/src/gpu/effects/GrConfigConversionEffect.cpp
+++ b/src/gpu/effects/GrConfigConversionEffect.cpp
@@ -115,9 +115,9 @@
     return GrTBackendEffectFactory<GrConfigConversionEffect>::getInstance();
 }
 
-bool GrConfigConversionEffect::onIsEqual(const GrEffectRef& s) const {
+bool GrConfigConversionEffect::onIsEqual(const GrEffect& s) const {
     const GrConfigConversionEffect& other = CastEffect<GrConfigConversionEffect>(s);
-    return this->texture(0) == s->texture(0) &&
+    return this->texture(0) == s.texture(0) &&
            other.fSwapRedAndBlue == fSwapRedAndBlue &&
            other.fPMConversion == fPMConversion;
 }