Refactor various gradient effect classes

src/effects/gradients/SkGradientShaderPriv.h

Index: src/effects/gradients/SkGradientShaderPriv.h
diff --git a/src/effects/gradients/SkGradientShaderPriv.h b/src/effects/gradients/SkGradientShaderPriv.h
index 16c6475e339e0d94a6bd07b17f70b76a827a2135..50ad427e4ae1d5f3aa03f37b79e496d930be5b52 100644
--- a/src/effects/gradients/SkGradientShaderPriv.h
+++ b/src/effects/gradients/SkGradientShaderPriv.h
@@ -326,6 +326,7 @@ class GrInvariantOutput;
 // Base class for Gr gradient effects
 class GrGradientEffect : public GrFragmentProcessor {
 public:
+    class GLSLProcessor;
 
     GrGradientEffect(GrContext* ctx,
                      const SkGradientShaderBase& shader,
@@ -353,7 +354,6 @@ public:
     }
 
 protected:
-
     /** Populates a pair of arrays with colors and stop info to construct a random gradient.
         The function decides whether stop values should be used or not. The return value indicates
         the number of colors, which will be capped by kMaxRandomGradientColors. colors should be
@@ -392,10 +392,10 @@ private:
 
 ///////////////////////////////////////////////////////////////////////////////
 
-// Base class for GL gradient effects
-class GrGLGradientEffect : public GrGLSLFragmentProcessor {
+// Base class for GLSL gradient effects
+class GrGradientEffect::GLSLProcessor : public GrGLSLFragmentProcessor {
 public:
-    GrGLGradientEffect();
+    GLSLProcessor();
 
 protected:
     void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override;