[C++11 Allowed Features] Declares a type-safe null pointer converting from NULL to nullptr in src/…

cc/output/filter_operations.cc

Index: cc/output/filter_operations.cc
diff --git a/cc/output/filter_operations.cc b/cc/output/filter_operations.cc
index dcdd4803fd60756b00ed365c8926573b4431eecf..fc3317d21d0e7a0d6ca690e21d315fbc413f2f0a 100644
--- a/cc/output/filter_operations.cc
+++ b/cc/output/filter_operations.cc
@@ -187,11 +187,11 @@ FilterOperations FilterOperations::Blend(const FilterOperations& from,
   if (from_is_longer) {
     for (size_t i = shorter_size; i < longer_size; i++) {
       blended_filters.Append(
-          FilterOperation::Blend(&from.at(i), NULL, progress));
+          FilterOperation::Blend(&from.at(i), nullptr, progress));
     }
   } else {
     for (size_t i = shorter_size; i < longer_size; i++)
-      blended_filters.Append(FilterOperation::Blend(NULL, &at(i), progress));
+      blended_filters.Append(FilterOperation::Blend(nullptr, &at(i), progress));
   }
 
   return blended_filters;