Style Change: NULL->nullptr

src/opts/SkXfermode_opts.h

Index: src/opts/SkXfermode_opts.h
diff --git a/src/opts/SkXfermode_opts.h b/src/opts/SkXfermode_opts.h
index 673387b86a72e4f2d736c87c0224804533b43eab..7005d593afe698c724336e1bbe58a0d317295f2c 100644
--- a/src/opts/SkXfermode_opts.h
+++ b/src/opts/SkXfermode_opts.h
@@ -201,7 +201,7 @@ public:
         , fAAProc4(aaproc4) {}
 
     void xfer32(SkPMColor dst[], const SkPMColor src[], int n, const SkAlpha aa[]) const override {
-        if (NULL == aa) {
+        if (nullptr == aa) {
             Sk4px::MapDstSrc(n, dst, src, [&](const Sk4px& dst4, const Sk4px& src4) {
                 return fProc4(src4, dst4);
             });
@@ -214,7 +214,7 @@ public:
     }
 
     void xfer16(uint16_t dst[], const SkPMColor src[], int n, const SkAlpha aa[]) const override {
-        if (NULL == aa) {
+        if (nullptr == aa) {
             Sk4px::MapDstSrc(n, dst, src, [&](const Sk4px& dst4, const Sk4px& src4) {
                 return fProc4(src4, dst4);
             });