Bundle SkShader::asFragmentProcessor arguments in a struct

src/core/SkColorFilterShader.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkColorFilterShader_DEFINED
 #define SkColorFilterShader_DEFINED
 
 #include "SkColorFilter.h"
 #include "SkShader.h"
 
 class SkColorFilterShader : public SkShader {
 public:
     SkColorFilterShader(sk_sp<SkShader> shader, sk_sp<SkColorFilter> filter);
 
 #if SK_SUPPORT_GPU
-    sk_sp<GrFragmentProcessor> asFragmentProcessor(GrContext*,
-                                                   const SkMatrix& viewM,
-                                                   const SkMatrix* localMatrix,
-                                                   SkFilterQuality,
-                                                   SkSourceGammaTreatment) const override;
+    sk_sp<GrFragmentProcessor> asFragmentProcessor(const AsFPArgs&) const override;
 #endif
 
     class FilterShaderContext : public SkShader::Context {
     public:
         // Takes ownership of shaderContext and calls its destructor.
         FilterShaderContext(const SkColorFilterShader&, SkShader::Context*, const ContextRec&);
         virtual ~FilterShaderContext();
 
         uint32_t getFlags() const override;
 
@@ skipping 20 matching lines @@
     Context* onCreateContext(const ContextRec&, void* storage) const override;
 
 private:
     sk_sp<SkShader>      fShader;
     sk_sp<SkColorFilter> fFilter;
 
     typedef SkShader INHERITED;
 };
 
 #endif