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

cc/debug/picture_record_benchmark.cc

Index: cc/debug/picture_record_benchmark.cc
diff --git a/cc/debug/picture_record_benchmark.cc b/cc/debug/picture_record_benchmark.cc
index 2bda59d9960b8c939a8e1a7f8a7bf6c1dd2c866b..a8a296dcb6b54b4b5c7dce0d11d4da30b54dd8c3 100644
--- a/cc/debug/picture_record_benchmark.cc
+++ b/cc/debug/picture_record_benchmark.cc
@@ -31,13 +31,13 @@ PictureRecordBenchmark::PictureRecordBenchmark(
   if (!value)
     return;
 
-  base::ListValue* list = NULL;
+  base::ListValue* list = nullptr;
   value->GetAsList(&list);
   if (!list)
     return;
 
   for (base::ListValue::iterator it = list->begin(); it != list->end(); ++it) {
-    base::DictionaryValue* dictionary = NULL;
+    base::DictionaryValue* dictionary = nullptr;
     (*it)->GetAsDictionary(&dictionary);
     if (!dictionary ||
         !dictionary->HasKey("width") ||