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

Review URL: https://codereview.chromium.org/1316233002
diff --git a/src/core/SkYUVPlanesCache.cpp b/src/core/SkYUVPlanesCache.cpp
index f013599..336b581 100644
--- a/src/core/SkYUVPlanesCache.cpp
+++ b/src/core/SkYUVPlanesCache.cpp
@@ -59,7 +59,7 @@
 
         SkCachedData* tmpData = rec.fValue.fData;
         tmpData->ref();
-        if (NULL == tmpData->data()) {
+        if (nullptr == tmpData->data()) {
             tmpData->unref();
             return false;
         }
@@ -75,7 +75,7 @@
     YUVValue result;
     YUVPlanesKey key(genID);
     if (!CHECK_LOCAL(localCache, find, Find, key, YUVPlanesRec::Visitor, &result)) {
-        return NULL;
+        return nullptr;
     }
     
     *info = result.fInfo;