Style Change: NULL->nullptr
DOCS_PREVIEW= https://skia.org/?cl=1316233002

Review URL: https://codereview.chromium.org/1316233002
diff --git a/src/codec/SkWebpCodec.cpp b/src/codec/SkWebpCodec.cpp
index e17aa7e..ccf4964 100644
--- a/src/codec/SkWebpCodec.cpp
+++ b/src/codec/SkWebpCodec.cpp
@@ -79,7 +79,7 @@
     if (webp_parse_header(stream, &info)) {
         return new SkWebpCodec(info, streamDeleter.detach());
     }
-    return NULL;
+    return nullptr;
 }
 
 // This version is slightly different from SkCodecPriv's version of conversion_possible. It
@@ -221,7 +221,7 @@
     config.output.u.RGBA.size = dstInfo.getSafeSize(rowBytes);
     config.output.is_external_memory = 1;
 
-    SkAutoTCallVProc<WebPIDecoder, WebPIDelete> idec(WebPIDecode(NULL, 0, &config));
+    SkAutoTCallVProc<WebPIDecoder, WebPIDelete> idec(WebPIDecode(nullptr, 0, &config));
     if (!idec) {
         return kInvalidInput;
     }