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

src/effects/SkMagnifierImageFilter.cpp

Index: src/effects/SkMagnifierImageFilter.cpp
diff --git a/src/effects/SkMagnifierImageFilter.cpp b/src/effects/SkMagnifierImageFilter.cpp
index 1e1ec45f70026e457e1fd981223de94a4ef30295..bc3fe040db6d8dee58467153ee7f109e0a8e17b5 100644
--- a/src/effects/SkMagnifierImageFilter.cpp
+++ b/src/effects/SkMagnifierImageFilter.cpp
@@ -195,7 +195,7 @@ GrGLFragmentProcessor* GrMagnifierEffect::onCreateGLInstance() const {
 
 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrMagnifierEffect);
 
-GrFragmentProcessor* GrMagnifierEffect::TestCreate(GrProcessorTestData* d) {
+const GrFragmentProcessor* GrMagnifierEffect::TestCreate(GrProcessorTestData* d) {
     GrTexture* texture = d->fTextures[0];
     const int kMaxWidth = 200;
     const int kMaxHeight = 200;