Refactor various gradient effect classes

src/effects/gradients/SkGradientShaderPriv.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 SkGradientShaderPriv_DEFINED
 #define SkGradientShaderPriv_DEFINED
 
@@ skipping 308 matching lines @@
  * SweepGradient
  *  The angle from the origin of texture coordinates in post-matrix space
  *  determines the gradient value.
  */
 
  class GrTextureStripAtlas;
 
 // Base class for Gr gradient effects
 class GrGradientEffect : public GrFragmentProcessor {
 public:
+    class GLSLProcessor;
 
     GrGradientEffect(GrContext* ctx,
                      const SkGradientShaderBase& shader,
                      const SkMatrix& matrix,
                      SkShader::TileMode tileMode);
 
     virtual ~GrGradientEffect();
 
     bool useAtlas() const { return SkToBool(-1 != fRow); }
     SkScalar getYCoord() const { return fYCoord; };
@@ skipping 46 matching lines @@
     SkGradientShaderBase::GpuColorType fColorType;
     SkColor fColors[3]; // More than 3 colors we use texture
     PremulType fPremulType; // This only changes behavior for two and three color special cases.
                             // It is already baked into to the table for texture gradients.
     typedef GrFragmentProcessor INHERITED;
 
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 // Base class for GL gradient effects

[bsalomon, 2016/08/09 13:47:05]

Can you change GL in the comment to GLSL?

-class GrGLGradientEffect : public GrGLSLFragmentProcessor {
+class GrGradientEffect::GLSLProcessor : public GrGLSLFragmentProcessor {
 public:
-    GrGLGradientEffect();
+    GLSLProcessor();
 
 protected:
     void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override;
 
 protected:
     /**
      * Subclasses must call this. It will return a key for the part of the shader code controlled
      * by the base class. The subclasses must stick it in their key and then pass it to the below
      * emit* functions from their emitCode function.
      */
@@ skipping 31 matching lines @@
     GrGLSLProgramDataManager::UniformHandle fColorStartUni;
     GrGLSLProgramDataManager::UniformHandle fColorMidUni;
     GrGLSLProgramDataManager::UniformHandle fColorEndUni;
 
     typedef GrGLSLFragmentProcessor INHERITED;
 };
 
 #endif
 
 #endif