base::ListValue::Append cleanup: pass unique_ptr instead of the released pointer.

chrome/browser/ui/webui/options/core_options_handler.cc

Index: chrome/browser/ui/webui/options/core_options_handler.cc
diff --git a/chrome/browser/ui/webui/options/core_options_handler.cc b/chrome/browser/ui/webui/options/core_options_handler.cc
index dbe9310aef8e4cb813110708f8da7a098fff2ac4..ae9d4a89d1f8acffa697e128f5e1d416c1240612 100644
--- a/chrome/browser/ui/webui/options/core_options_handler.cc
+++ b/chrome/browser/ui/webui/options/core_options_handler.cc
@@ -358,7 +358,7 @@ void CoreOptionsHandler::DispatchPrefChangeNotification(
       pref_callback_map_.equal_range(name);
   base::ListValue result_value;
   result_value.AppendString(name);
-  result_value.Append(value.release());
+  result_value.Append(std::move(value));
   for (PreferenceCallbackMap::const_iterator iter = range.first;
        iter != range.second; ++iter) {
     const std::string& callback_function = iter->second;