Revert of Bundle common arguments to GrGradientEffect creation

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 ec70929d43a6e663a68f11f5349959407986f50d..ee30c9b21b03fc5f9a69dbdb13e224418c132981 100644
--- a/src/effects/gradients/SkGradientShaderPriv.h
+++ b/src/effects/gradients/SkGradientShaderPriv.h
@@ -323,25 +323,12 @@
 // 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(const CreateArgs&);
+    GrGradientEffect(GrContext* ctx,
+                     const SkGradientShaderBase& shader,
+                     const SkMatrix& matrix,
+                     SkShader::TileMode tileMode);
 
     virtual ~GrGradientEffect();