Bundle common arguments to GrGradientEffect creation

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 305 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:
+    struct CreateArgs {
+        CreateArgs(GrContext* context,
+                   const SkGradientShaderBase* shader,
+                   const SkMatrix* matrix,
+                   SkShader::TileMode tileMode)
+            : fContext(context)
+            , fShader(shader)
+            , fMatrix(matrix)
+            , fTileMode(tileMode) {}
+
+        GrContext*                  fContext;
+        const SkGradientShaderBase* fShader;
+        const SkMatrix*             fMatrix;
+        SkShader::TileMode          fTileMode;
+    };
+
     class GLSLProcessor;
 
-    GrGradientEffect(GrContext* ctx,
-                     const SkGradientShaderBase& shader,
-                     const SkMatrix& matrix,
-                     SkShader::TileMode tileMode);
+    GrGradientEffect(const CreateArgs&);
 
     virtual ~GrGradientEffect();
 
     bool useAtlas() const { return SkToBool(-1 != fRow); }
     SkScalar getYCoord() const { return fYCoord; }
 
     enum ColorType {
         kTwo_ColorType,
         kThree_ColorType, // Symmetric three color
         kTexture_ColorType,
@@ skipping 133 matching lines @@
     SkScalar fCachedYCoord;
     GrGLSLProgramDataManager::UniformHandle fColorsUni;
     GrGLSLProgramDataManager::UniformHandle fFSYUni;
 
     typedef GrGLSLFragmentProcessor INHERITED;
 };
 
 #endif
 
 #endif