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

chrome/browser/extensions/permissions_updater.cc

Index: chrome/browser/extensions/permissions_updater.cc
diff --git a/chrome/browser/extensions/permissions_updater.cc b/chrome/browser/extensions/permissions_updater.cc
index 4370e3214939ed9d3565d61660a7015d0721bd6e..26730a999aaa4510a01500c6c3bab92db4b18f12 100644
--- a/chrome/browser/extensions/permissions_updater.cc
+++ b/chrome/browser/extensions/permissions_updater.cc
@@ -232,7 +232,7 @@ void PermissionsUpdater::DispatchEvent(
   std::unique_ptr<base::ListValue> value(new base::ListValue());
   std::unique_ptr<api::permissions::Permissions> permissions =
       PackPermissionSet(changed_permissions);
-  value->Append(permissions->ToValue().release());
+  value->Append(permissions->ToValue());
   std::unique_ptr<Event> event(
       new Event(histogram_value, event_name, std::move(value)));
   event->restrict_to_browser_context = browser_context_;