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/GrTextureDomainEffect.h b/src/gpu/effects/GrTextureDomainEffect.h
index 81b3da4..b7f665c 100644
--- a/src/gpu/effects/GrTextureDomainEffect.h
+++ b/src/gpu/effects/GrTextureDomainEffect.h
@@ -77,7 +77,7 @@
                           WrapMode,
                           bool bilerp);
 
-    virtual bool onIsEqual(const GrEffectRef&) const SK_OVERRIDE;
+    virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE;
 
     GR_DECLARE_EFFECT_TEST;