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

chrome/browser/ui/webui/settings/settings_startup_pages_handler.cc

Index: chrome/browser/ui/webui/settings/settings_startup_pages_handler.cc
diff --git a/chrome/browser/ui/webui/settings/settings_startup_pages_handler.cc b/chrome/browser/ui/webui/settings/settings_startup_pages_handler.cc
index 8ef6ebd7cfddd1eb7a7974fbd1a6af403bf04295..3125778aa68afb6e2afb2f67c2a4c31559d4aa9f 100644
--- a/chrome/browser/ui/webui/settings/settings_startup_pages_handler.cc
+++ b/chrome/browser/ui/webui/settings/settings_startup_pages_handler.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/ui/webui/settings/settings_startup_pages_handler.h"
 
 #include <string>
+#include <utility>
 #include <vector>
 
 #include "chrome/browser/prefs/session_startup_pref.h"
@@ -80,7 +81,7 @@ void StartupPagesHandler::OnModelChanged() {
     entry->SetString("tooltip",
                      startup_custom_pages_table_model_.GetTooltip(i));
     entry->SetInteger("modelIndex", i);
-    startup_pages.Append(entry.release());
+    startup_pages.Append(std::move(entry));
   }
 
   CallJavascriptFunction("cr.webUIListenerCallback",