Rewrite simple uses of base::ListValue::Append(base::Value*) on CrOS.

chrome/browser/extensions/api/autotest_private/autotest_private_api.cc

Index: chrome/browser/extensions/api/autotest_private/autotest_private_api.cc
diff --git a/chrome/browser/extensions/api/autotest_private/autotest_private_api.cc b/chrome/browser/extensions/api/autotest_private/autotest_private_api.cc
index 27e1777497183e29a26f9a43a31fc367169001da..52d12825225cd0a337fc3215bb938fa8d75bacd4 100644
--- a/chrome/browser/extensions/api/autotest_private/autotest_private_api.cc
+++ b/chrome/browser/extensions/api/autotest_private/autotest_private_api.cc
@@ -363,14 +363,14 @@ AutotestPrivateGetVisibleNotificationsFunction::Run() {
 #if defined(OS_CHROMEOS)
   for (auto* notification :
        message_center::MessageCenter::Get()->GetVisibleNotifications()) {
-    base::DictionaryValue* result(new base::DictionaryValue);
+    std::unique_ptr<base::DictionaryValue> result(new base::DictionaryValue);
     result->SetString("id", notification->id());
     result->SetString("type", ConvertToString(notification->type()));
     result->SetString("title", notification->title());
     result->SetString("message", notification->message());
     result->SetInteger("priority", notification->priority());
     result->SetInteger("progress", notification->progress());
-    values->Append(result);
+    values->Append(std::move(result));
   }
 
 #endif