Revert of Change base::Value::ListStorage to std::vector<base::Value>

chromeos/network/onc/onc_mapper.cc

Index: chromeos/network/onc/onc_mapper.cc
diff --git a/chromeos/network/onc/onc_mapper.cc b/chromeos/network/onc/onc_mapper.cc
index 16c1172c8dfb2e4af9e9dc6ae71cecded00a2d89..22f5766e935cfb471edd87c337dabcbef012b51a 100644
--- a/chromeos/network/onc/onc_mapper.cc
+++ b/chromeos/network/onc/onc_mapper.cc
@@ -120,9 +120,10 @@
   int original_index = 0;
   for (const auto& entry : onc_array) {
     std::unique_ptr<base::Value> result_entry;
-    result_entry =
-        MapEntry(original_index, *array_signature.onc_array_entry_signature,
-                 entry, nested_error);
+    result_entry = MapEntry(original_index,
+                            *array_signature.onc_array_entry_signature,
+                            *entry,
+                            nested_error);
     if (result_entry.get() != NULL)
       result_array->Append(std::move(result_entry));
     else