Rewrite simple uses of base::ListValue::Append() taking a raw pointer var.

chrome/browser/ui/webui/cookies_tree_model_util.cc

Index: chrome/browser/ui/webui/cookies_tree_model_util.cc
diff --git a/chrome/browser/ui/webui/cookies_tree_model_util.cc b/chrome/browser/ui/webui/cookies_tree_model_util.cc
index d5311963735db722aaf403ba706f2a002def79fa..a1cef917ef870316d7414cfebe3c3f343cf7d843 100644
--- a/chrome/browser/ui/webui/cookies_tree_model_util.cc
+++ b/chrome/browser/ui/webui/cookies_tree_model_util.cc
@@ -309,10 +309,11 @@ bool CookiesTreeModelUtil::GetCookieTreeNodeDictionary(
     base::ListValue* app_infos = new base::ListValue;
     for (extensions::ExtensionSet::const_iterator it = protecting_apps->begin();
          it != protecting_apps->end(); ++it) {
-      base::DictionaryValue* app_info = new base::DictionaryValue();
+      std::unique_ptr<base::DictionaryValue> app_info(
+          new base::DictionaryValue());
       app_info->SetString(kKeyId, (*it)->id());
       app_info->SetString(kKeyName, (*it)->name());
-      app_infos->Append(app_info);
+      app_infos->Append(std::move(app_info));
     }
     dict->Set(kKeyAppsProtectingThis, app_infos);
   }