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

src/effects/SkMorphologyImageFilter.cpp

Index: src/effects/SkMorphologyImageFilter.cpp
diff --git a/src/effects/SkMorphologyImageFilter.cpp b/src/effects/SkMorphologyImageFilter.cpp
index cde29c0f4cbca756f92c859d987762f1e081fb4c..2c99af92da32ef11324746db69bf7d3b5d7ff699 100644
--- a/src/effects/SkMorphologyImageFilter.cpp
+++ b/src/effects/SkMorphologyImageFilter.cpp
@@ -445,7 +445,7 @@ void GrMorphologyEffect::onComputeInvariantOutput(GrInvariantOutput* inout) cons
 
 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrMorphologyEffect);
 
-GrFragmentProcessor* GrMorphologyEffect::TestCreate(GrProcessorTestData* d) {
+const GrFragmentProcessor* GrMorphologyEffect::TestCreate(GrProcessorTestData* d) {
     int texIdx = d->fRandom->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx :
                                       GrProcessorUnitTest::kAlphaTextureIdx;
     Direction dir = d->fRandom->nextBool() ? kX_Direction : kY_Direction;