Bundle SkShader::asFragmentProcessor arguments in a struct

src/core/SkNormalSource.h

Index: src/core/SkNormalSource.h
diff --git a/src/core/SkNormalSource.h b/src/core/SkNormalSource.h
index e46e2dae34cc84d5fdf0e2877f2c21968f1fff13..f8db4961030f9f8be45a8ae1721776c9a5f40090 100644
--- a/src/core/SkNormalSource.h
+++ b/src/core/SkNormalSource.h
@@ -20,12 +20,7 @@ public:
     /** Returns a fragment processor that takes no input and outputs a normal (already rotated)
         as its output color. To be used as a child fragment processor.
     */
-    virtual sk_sp<GrFragmentProcessor> asFragmentProcessor(
-            GrContext* context,
-            const SkMatrix& viewM,
-            const SkMatrix* localMatrix,
-            SkFilterQuality filterQuality,
-            SkSourceGammaTreatment gammaTreatment) const = 0;
+    virtual sk_sp<GrFragmentProcessor> asFragmentProcessor(const SkShader::AsFPArgs&) const = 0;
 #endif
 
     class Provider {