Push isEqual/onIsEqual down from GrProcessor to subclasses.

src/gpu/effects/GrTextureDomain.cpp

Index: src/gpu/effects/GrTextureDomain.cpp
diff --git a/src/gpu/effects/GrTextureDomain.cpp b/src/gpu/effects/GrTextureDomain.cpp
index 596415ea20ab252614412ed1b40a7f3c8ad1cf64..647aed48f96fd77c8ebf1bc2fe0da89a416c8d72 100644
--- a/src/gpu/effects/GrTextureDomain.cpp
+++ b/src/gpu/effects/GrTextureDomain.cpp
@@ -263,7 +263,7 @@ const GrBackendFragmentProcessorFactory& GrTextureDomainEffect::getFactory() con
     return GrTBackendFragmentProcessorFactory<GrTextureDomainEffect>::getInstance();
 }
 
-bool GrTextureDomainEffect::onIsEqual(const GrProcessor& sBase) const {
+bool GrTextureDomainEffect::onIsEqual(const GrFragmentProcessor& sBase) const {
     const GrTextureDomainEffect& s = sBase.cast<GrTextureDomainEffect>();
     return this->hasSameTextureParamsMatrixAndSourceCoords(s) &&
            this->fTextureDomain == s.fTextureDomain;