Style Change: NULL->nullptr

tools/skdiff_utils.h

Index: tools/skdiff_utils.h
diff --git a/tools/skdiff_utils.h b/tools/skdiff_utils.h
index 00ebf899a95c363175661d651862b8dd339c57b0..8b94117eef591013147cac84fb69f6e2b7757e5f 100644
--- a/tools/skdiff_utils.h
+++ b/tools/skdiff_utils.h
@@ -15,13 +15,13 @@ class SkBitmap;
 class SkData;
 class SkString;
 
-/** Returns true if the two buffers passed in are both non-NULL,
+/** Returns true if the two buffers passed in are both non-nullptr,
  *  have the same length, and contain exactly the same byte values.
  */
 bool are_buffers_equal(SkData* skdata1, SkData* skdata2);
 
 /** Reads the file at the given path and returns its complete contents as an
- *  SkData object (or returns NULL on error).
+ *  SkData object (or returns nullptr on error).
  */
 SkData* read_file(const char* file_path);