Made shadows blurry (thru implementing variance mapping)

src/core/SkShadowShader.h

Index: src/core/SkShadowShader.h
diff --git a/src/core/SkShadowShader.h b/src/core/SkShadowShader.h
index 163d58acd7638f444d6937e4b2402634b91d50bd..3f9a534da9bd76a9c179637426f94bcdd570be52 100644
--- a/src/core/SkShadowShader.h
+++ b/src/core/SkShadowShader.h
@@ -23,7 +23,8 @@ public:
     static sk_sp<SkShader> Make(sk_sp<SkShader> povDepthShader,
                                 sk_sp<SkShader> diffuseShader,
                                 sk_sp<SkLights> lights,
-                                int diffuseWidth, int diffuseHeight);
+                                int diffuseWidth, int diffuseHeight,
+                                const SkShadowType& sType);
 
     // The shadow shader supports any number of ambient lights, but only
     // 4 non-ambient lights (currently just refers to directional lights).