Add ContextRec param to SkShader::contextSize()

src/effects/gradients/SkLinearGradient.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 SkLinearGradient_DEFINED
 #define SkLinearGradient_DEFINED
 
@@ skipping 10 matching lines @@
     Sk4fStorage& operator=(const Sk4f& src) {
         src.store(fArray);
         return *this;
     }
 };
 
 class SkLinearGradient : public SkGradientShaderBase {
 public:
     SkLinearGradient(const SkPoint pts[2], const Descriptor&);
 
-    size_t contextSize() const override;
+    size_t contextSize(const ContextRec&) const override;
 
     class LinearGradientContext : public SkGradientShaderBase::GradientShaderBaseContext {
     public:
         LinearGradientContext(const SkLinearGradient&, const ContextRec&);
 
         void shadeSpan(int x, int y, SkPMColor dstC[], int count) override;
 
         struct Rec {
             Sk4fStorage fColor;
             float       fPos;
@@ skipping 27 matching lines @@
     Context* onCreateContext(const ContextRec&, void* storage) const override;
 
 private:
     friend class SkGradientShader;
     typedef SkGradientShaderBase INHERITED;
     const SkPoint fStart;
     const SkPoint fEnd;
 };
 
 #endif