Change SkShader;asFragmentProcessor signature to no longer take skpaint\grcolor*

src/effects/SkArithmeticMode_gpu.cpp

Index: src/effects/SkArithmeticMode_gpu.cpp
diff --git a/src/effects/SkArithmeticMode_gpu.cpp b/src/effects/SkArithmeticMode_gpu.cpp
index 7732917e4209087e37ea44f22ef98b28f9ff581c..fd20b73cdc46770b0981ce1d2227fc56f8cddce1 100644
--- a/src/effects/SkArithmeticMode_gpu.cpp
+++ b/src/effects/SkArithmeticMode_gpu.cpp
@@ -137,7 +137,7 @@ void GrArithmeticFP::onComputeInvariantOutput(GrInvariantOutput* inout) const {
 
 ///////////////////////////////////////////////////////////////////////////////
 
-GrFragmentProcessor* GrArithmeticFP::TestCreate(GrProcessorTestData* d) {
+const GrFragmentProcessor* GrArithmeticFP::TestCreate(GrProcessorTestData* d) {
     float k1 = d->fRandom->nextF();
     float k2 = d->fRandom->nextF();
     float k3 = d->fRandom->nextF();
@@ -295,7 +295,7 @@ void GrArithmeticXPFactory::getInvariantBlendedColor(const GrProcOptInfo& colorP
 
 GR_DEFINE_XP_FACTORY_TEST(GrArithmeticXPFactory);
 
-GrXPFactory* GrArithmeticXPFactory::TestCreate(GrProcessorTestData* d) {
+const GrXPFactory* GrArithmeticXPFactory::TestCreate(GrProcessorTestData* d) {
     float k1 = d->fRandom->nextF();
     float k2 = d->fRandom->nextF();
     float k3 = d->fRandom->nextF();