Bundle SkShader::asFragmentProcessor arguments in a struct

src/effects/gradients/SkRadialGradient.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkRadialGradient_DEFINED
 #define SkRadialGradient_DEFINED
 
 #include "SkGradientShaderPriv.h"
 
 class SkRadialGradient : public SkGradientShaderBase {
 public:
     SkRadialGradient(const SkPoint& center, SkScalar radius, const Descriptor&);
 
     class RadialGradientContext : public SkGradientShaderBase::GradientShaderBaseContext {
     public:
         RadialGradientContext(const SkRadialGradient&, const ContextRec&);
 
         void shadeSpan(int x, int y, SkPMColor dstC[], int count) override;
 
     private:
         typedef SkGradientShaderBase::GradientShaderBaseContext INHERITED;
     };
 
     GradientType asAGradient(GradientInfo* info) const override;
 #if SK_SUPPORT_GPU
-    sk_sp<GrFragmentProcessor> asFragmentProcessor(GrContext*,
-                                                   const SkMatrix& viewM,
-                                                   const SkMatrix*,
-                                                   SkFilterQuality,
-                                                   SkSourceGammaTreatment) const override;
+    sk_sp<GrFragmentProcessor> asFragmentProcessor(const AsFPArgs&) const override;
 #endif
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkRadialGradient)
 
 protected:
     SkRadialGradient(SkReadBuffer& buffer);
     void flatten(SkWriteBuffer& buffer) const override;
     size_t onContextSize(const ContextRec&) const override;
     Context* onCreateContext(const ContextRec&, void* storage) const override;
 
 private:
     const SkPoint fCenter;
     const SkScalar fRadius;
 
     friend class SkGradientShader;
     typedef SkGradientShaderBase INHERITED;
 };
 
 #endif