Style Change: NULL->nullptr

src/images/SkScaledBitmapSampler.h

Index: src/images/SkScaledBitmapSampler.h
diff --git a/src/images/SkScaledBitmapSampler.h b/src/images/SkScaledBitmapSampler.h
index 90c4142bdfb444db79cd2059c1b03afe5328e9cb..198dc07572c0dcf9b920ab08504d16814a4e7ec0 100644
--- a/src/images/SkScaledBitmapSampler.h
+++ b/src/images/SkScaledBitmapSampler.h
@@ -49,9 +49,9 @@ public:
     // prepares iterator to process the src colors and write them into dst.
     // Returns false if the request cannot be fulfulled.
     bool begin(SkBitmap* dst, SrcConfig sc, const SkImageDecoder& decoder,
-               const SkPMColor* = NULL);
+               const SkPMColor* = nullptr);
     bool begin(SkBitmap* dst, SrcConfig sc, const Options& opts,
-               const SkPMColor* = NULL);
+               const SkPMColor* = nullptr);
     // call with row of src pixels, for y = 0...scaledHeight-1.
     // returns true if the row had non-opaque alpha in it
     bool next(const uint8_t* SK_RESTRICT src);