Made shadows blurry (thru implementing variance mapping)

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2224163005

Review-Url: https://codereview.chromium.org/2224163005
diff --git a/src/core/SkLiteDL.h b/src/core/SkLiteDL.h
index 400b242..4f28486 100644
--- a/src/core/SkLiteDL.h
+++ b/src/core/SkLiteDL.h
@@ -48,7 +48,8 @@
     void drawAnnotation     (const SkRect&, const char*, SkData*);
     void drawDrawable       (SkDrawable*, const SkMatrix*);
     void drawPicture        (const SkPicture*, const SkMatrix*, const SkPaint*);
-    void drawShadowedPicture(const SkPicture*, const SkMatrix*, const SkPaint*);
+    void drawShadowedPicture(const SkPicture*, const SkMatrix*,
+                             const SkPaint*, const SkShadowParams& params);
 
     void drawText       (const void*, size_t, SkScalar, SkScalar, const SkPaint&);
     void drawPosText    (const void*, size_t, const SkPoint[], const SkPaint&);