Update SkLightingShader to support rotation

include/effects/SkLightingImageFilter.h

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkLightingImageFilter_DEFINED
 #define SkLightingImageFilter_DEFINED
 
 #include "SkImageFilter.h"
 #include "SkColor.h"
 
 
-class SkLight;
+class SkImageFilterLight;
 struct SkPoint3;
 
 class SK_API SkLightingImageFilter : public SkImageFilter {
 public:
     static SkImageFilter* CreateDistantLitDiffuse(const SkPoint3& direction,
         SkColor lightColor, SkScalar surfaceScale, SkScalar kd,
         SkImageFilter* input = NULL, const CropRect* cropRect = NULL);
     static SkImageFilter* CreatePointLitDiffuse(const SkPoint3& location,
         SkColor lightColor, SkScalar surfaceScale, SkScalar kd,
         SkImageFilter* input = NULL, const CropRect* cropRect = NULL);
     static SkImageFilter* CreateSpotLitDiffuse(const SkPoint3& location,
         const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle,
         SkColor lightColor, SkScalar surfaceScale, SkScalar kd,
         SkImageFilter* input = NULL, const CropRect* cropRect = NULL);
     static SkImageFilter* CreateDistantLitSpecular(const SkPoint3& direction,
         SkColor lightColor, SkScalar surfaceScale, SkScalar ks,
         SkScalar shininess, SkImageFilter* input = NULL, const CropRect* cropRect = NULL);
     static SkImageFilter* CreatePointLitSpecular(const SkPoint3& location,
         SkColor lightColor, SkScalar surfaceScale, SkScalar ks,
         SkScalar shininess, SkImageFilter* input = NULL, const CropRect* cropRect = NULL);
     static SkImageFilter* CreateSpotLitSpecular(const SkPoint3& location,
         const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle,
         SkColor lightColor, SkScalar surfaceScale, SkScalar ks,
         SkScalar shininess, SkImageFilter* input = NULL, const CropRect* cropRect = NULL);
     ~SkLightingImageFilter();
 
     SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP()
 
 protected:
-    SkLightingImageFilter(SkLight* light,
+    SkLightingImageFilter(SkImageFilterLight* light,
                           SkScalar surfaceScale,
                           SkImageFilter* input,
                           const CropRect* cropRect);
     void flatten(SkWriteBuffer&) const override;
-    const SkLight* light() const { return fLight.get(); }
+    const SkImageFilterLight* light() const { return fLight.get(); }
     SkScalar surfaceScale() const { return fSurfaceScale; }
 
 private:
     typedef SkImageFilter INHERITED;
-    SkAutoTUnref<SkLight> fLight;
+    SkAutoTUnref<SkImageFilterLight> fLight;
     SkScalar fSurfaceScale;
 };
 
 #endif