Style Change: NULL->nullptr

gm/ninepatchstretch.cpp

Index: gm/ninepatchstretch.cpp
diff --git a/gm/ninepatchstretch.cpp b/gm/ninepatchstretch.cpp
index 267c41587b3aeb6b11ea9811618bce0a03c1fba5..4074add1bbec475e2070a4aad1b16973e67f49a5 100644
--- a/gm/ninepatchstretch.cpp
+++ b/gm/ninepatchstretch.cpp
@@ -70,7 +70,7 @@ protected:
     }
 
     void onDraw(SkCanvas* canvas) override {
-        if (NULL == fBitmap.pixelRef()) {
+        if (nullptr == fBitmap.pixelRef()) {
             fImage.reset(make_image(canvas, &fCenter));
             image_to_bitmap(fImage, &fBitmap);
         }
@@ -85,7 +85,7 @@ protected:
             { fixed * 4,     fixed * 4 }
         };
 
-        canvas->drawBitmap(fBitmap, 10, 10, NULL);
+        canvas->drawBitmap(fBitmap, 10, 10, nullptr);
 
         SkScalar x = SkIntToScalar(100);
         SkScalar y = SkIntToScalar(100);