Auto-compare GrProcessors' texture accesses in isEqual().

src/effects/SkMorphologyImageFilter.cpp

Index: src/effects/SkMorphologyImageFilter.cpp
diff --git a/src/effects/SkMorphologyImageFilter.cpp b/src/effects/SkMorphologyImageFilter.cpp
index 95cf85e8002d75e3596b852fb6d5c041f443197e..03c50e4927d8c250c5227cecdb59a8406d1a0194 100644
--- a/src/effects/SkMorphologyImageFilter.cpp
+++ b/src/effects/SkMorphologyImageFilter.cpp
@@ -450,8 +450,7 @@ const GrBackendFragmentProcessorFactory& GrMorphologyEffect::getFactory() const
 
 bool GrMorphologyEffect::onIsEqual(const GrFragmentProcessor& sBase) const {
     const GrMorphologyEffect& s = sBase.cast<GrMorphologyEffect>();
-    return (this->texture(0) == s.texture(0) &&
-            this->radius() == s.radius() &&
+    return (this->radius() == s.radius() &&
             this->direction() == s.direction() &&
             this->type() == s.type());
 }