Remove SkShader virtual method validContext

include/effects/SkPerlinNoiseShader.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 SkPerlinNoiseShader_DEFINED
 #define SkPerlinNoiseShader_DEFINED
 
@@ skipping 54 matching lines @@
      * Create alias for CreateTurbulunce until all Skia users changed
      * its code to use the new naming
      */
     static SkShader* CreateTubulence(SkScalar baseFrequencyX, SkScalar baseFrequencyY,
                                      int numOctaves, SkScalar seed,
                                      const SkISize* tileSize = NULL) {
     return CreateTurbulence(baseFrequencyX, baseFrequencyY, numOctaves, seed, tileSize);
     }
 
 
-    virtual SkShader::Context* createContext(const ContextRec&, void* storage) const SK_OVERRIDE;
     virtual size_t contextSize() const SK_OVERRIDE;
 
     class PerlinNoiseShaderContext : public SkShader::Context {
     public:
         PerlinNoiseShaderContext(const SkPerlinNoiseShader& shader, const ContextRec&);
         virtual ~PerlinNoiseShaderContext() {}
 
         virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE;
         virtual void shadeSpan16(int x, int y, uint16_t[], int count) SK_OVERRIDE;
 
@@ skipping 11 matching lines @@
     };
 
     virtual GrEffectRef* asNewEffect(GrContext* context, const SkPaint&) const SK_OVERRIDE;
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPerlinNoiseShader)
 
 protected:
     SkPerlinNoiseShader(SkReadBuffer&);
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
+    virtual Context* onCreateContext(const ContextRec&, void* storage) const SK_OVERRIDE;
 
 private:
     SkPerlinNoiseShader(SkPerlinNoiseShader::Type type, SkScalar baseFrequencyX,
                         SkScalar baseFrequencyY, int numOctaves, SkScalar seed,
                         const SkISize* tileSize);
     virtual ~SkPerlinNoiseShader();
 
     // TODO (scroggo): Once all SkShaders are created from a factory, and we have removed the
     // constructor that creates SkPerlinNoiseShader from an SkReadBuffer, several fields can
     // be made constant.
     /*const*/ SkPerlinNoiseShader::Type fType;
     /*const*/ SkScalar                  fBaseFrequencyX;
     /*const*/ SkScalar                  fBaseFrequencyY;
     /*const*/ int                       fNumOctaves;
     /*const*/ SkScalar                  fSeed;
     /*const*/ SkISize                   fTileSize;
     /*const*/ bool                      fStitchTiles;
 
     PaintingData* fPaintingData;
 
     typedef SkShader INHERITED;
 };
 
 #endif