Make perlin noise do CTM-correct scaling.

include/effects/SkPerlinNoiseShader.h

Index: include/effects/SkPerlinNoiseShader.h
diff --git a/include/effects/SkPerlinNoiseShader.h b/include/effects/SkPerlinNoiseShader.h
index 96cad4684dffd5a73da63ad4fbdf2785ed9d3f51..2d9dfdd69ad99d14c6251b5462c435af0c7b1e05 100644
--- a/include/effects/SkPerlinNoiseShader.h
+++ b/include/effects/SkPerlinNoiseShader.h
@@ -23,9 +23,9 @@
     http://www.w3.org/TR/SVG/filters.html#feTurbulenceElement
 */
 class SK_API SkPerlinNoiseShader : public SkShader {
-    struct PaintingData;
 public:
     struct StitchData;
+    struct PaintingData;
 
     /**
      *  About the noise types : the difference between the 2 is just minor tweaks to the algorithm,
@@ -77,7 +77,7 @@ public:
     class PerlinNoiseShaderContext : public SkShader::Context {
     public:
         PerlinNoiseShaderContext(const SkPerlinNoiseShader& shader, const ContextRec&);
-        virtual ~PerlinNoiseShaderContext() {}
+        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;
@@ -85,12 +85,13 @@ public:
     private:
         SkPMColor shade(const SkPoint& point, StitchData& stitchData) const;
         SkScalar calculateTurbulenceValueForPoint(
-            int channel, const PaintingData& paintingData,
+            int channel,
             StitchData& stitchData, const SkPoint& point) const;
-        SkScalar noise2D(int channel, const PaintingData& paintingData,
+        SkScalar noise2D(int channel,
                          const StitchData& stitchData, const SkPoint& noiseVector) const;
 
         SkMatrix fMatrix;
+        PaintingData* fPaintingData;
 
         typedef SkShader::Context INHERITED;
     };
@@ -123,8 +124,6 @@ private:
     /*const*/ SkISize                   fTileSize;
     /*const*/ bool                      fStitchTiles;
 
-    PaintingData* fPaintingData;
-
     typedef SkShader INHERITED;
 };