use Make instead of Create to return a shared shader

experimental/SkPerlinNoiseShader2/SkPerlinNoiseShader2.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkPerlinNoiseShader2_DEFINED
 #define SkPerlinNoiseShader2_DEFINED
 
@@ skipping 43 matching lines @@
      *
      *  The number of octaves provided should be fairly small, although no limit is enforced.
      *  Each octave doubles the frequency, so 10 octaves would produce noise from
      *  baseFrequency * 1, * 2, * 4, ..., * 512, which quickly yields insignificantly small
      *  periods and resembles regular unstructured noise rather than Perlin noise.
      *
      *  If tileSize isn't NULL or an empty size, the tileSize parameter will be used to modify
      *  the frequencies so that the noise will be tileable for the given tile size. If tileSize
      *  is NULL or an empty size, the frequencies will be used as is without modification.
      */
-    static SkShader* CreateFractalNoise(SkScalar baseFrequencyX, SkScalar baseFrequencyY,
+    static sk_sp<SkShader> MakeFractalNoise(SkScalar baseFrequencyX, SkScalar baseFrequencyY,
                                         int numOctaves, SkScalar seed,

[f(malita), 2016/03/08 15:50:35]

Nit: indentation mismatch (here and lots of other instances)

[reed1, 2016/03/08 20:17:14]

Done.

                                         const SkISize* tileSize = NULL);
-    static SkShader* CreateTurbulence(SkScalar baseFrequencyX, SkScalar baseFrequencyY,
+    static sk_sp<SkShader> MakeTurbulence(SkScalar baseFrequencyX, SkScalar baseFrequencyY,
                                      int numOctaves, SkScalar seed,
                                      const SkISize* tileSize = NULL);
     /**
      * Creates an Improved Perlin Noise shader. The z value is roughly equivalent to the seed of the
      * other two types, but minor variations to z will only slightly change the noise.
      */
-    static SkShader* CreateImprovedNoise(SkScalar baseFrequencyX, SkScalar baseFrequencyY,
+    static sk_sp<SkShader> MakeImprovedNoise(SkScalar baseFrequencyX, SkScalar baseFrequencyY,
                                          int numOctaves, SkScalar z);
     /**
      * Create alias for CreateTurbulunce until all Skia users changed
      * its code to use the new naming
      */
-    static SkShader* CreateTubulence(SkScalar baseFrequencyX, SkScalar baseFrequencyY,
+    static sk_sp<SkShader> MakeTubulence(SkScalar baseFrequencyX, SkScalar baseFrequencyY,
                                      int numOctaves, SkScalar seed,
                                      const SkISize* tileSize = NULL) {
-        return CreateTurbulence(baseFrequencyX, baseFrequencyY, numOctaves, seed, tileSize);
+        return MakeTurbulence(baseFrequencyX, baseFrequencyY, numOctaves, seed, tileSize);
     }
 
     class PerlinNoiseShaderContext : public SkShader::Context {
     public:
         PerlinNoiseShaderContext(const SkPerlinNoiseShader2& shader, const ContextRec&);
         virtual ~PerlinNoiseShaderContext();
 
         void shadeSpan(int x, int y, SkPMColor[], int count) override;
 
     private:
@@ skipping 35 matching lines @@
     const SkScalar                  fBaseFrequencyY;
     const int                       fNumOctaves;
     const SkScalar                  fSeed;
     const SkISize                   fTileSize;
     const bool                      fStitchTiles;
 
     typedef SkShader INHERITED;
 };
 
 #endif