sk_sp for Ganesh.

Convert use of GrFragmentProcessor, GrGeometryProcessor, and
GrXPFactory to sk_sp. This clarifies ownership and should
reduce reference count churn by moving ownership.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2041113004

Review-Url: https://codereview.chromium.org/2041113004
diff --git a/src/core/SkColorShader.cpp b/src/core/SkColorShader.cpp
index 2c7ee8b..83fd239 100644
--- a/src/core/SkColorShader.cpp
+++ b/src/core/SkColorShader.cpp
@@ -89,12 +89,12 @@
 
 #include "SkGr.h"
 #include "effects/GrConstColorProcessor.h"
-const GrFragmentProcessor* SkColorShader::asFragmentProcessor(GrContext*, const SkMatrix&,
+sk_sp<GrFragmentProcessor> SkColorShader::asFragmentProcessor(GrContext*, const SkMatrix&,
                                                               const SkMatrix*,
                                                               SkFilterQuality,
                                                               SkSourceGammaTreatment) const {
     GrColor color = SkColorToPremulGrColor(fColor);
-    return GrConstColorProcessor::Create(color, GrConstColorProcessor::kModulateA_InputMode);
+    return GrConstColorProcessor::Make(color, GrConstColorProcessor::kModulateA_InputMode);
 }
 
 #endif
@@ -217,13 +217,13 @@
 
 #include "SkGr.h"
 #include "effects/GrConstColorProcessor.h"
-const GrFragmentProcessor* SkColor4Shader::asFragmentProcessor(GrContext*, const SkMatrix&,
+sk_sp<GrFragmentProcessor> SkColor4Shader::asFragmentProcessor(GrContext*, const SkMatrix&,
                                                                const SkMatrix*,
                                                                SkFilterQuality,
                                                                SkSourceGammaTreatment) const {
     // TODO: how to communicate color4f to Gr
     GrColor color = SkColorToPremulGrColor(fCachedByteColor);
-    return GrConstColorProcessor::Create(color, GrConstColorProcessor::kModulateA_InputMode);
+    return GrConstColorProcessor::Make(color, GrConstColorProcessor::kModulateA_InputMode);
 }
 
 #endif