arc: enable use_new_wrapper_types for notifications.mojom

components/arc/test/fake_notifications_instance.cc

Index: components/arc/test/fake_notifications_instance.cc
diff --git a/components/arc/test/fake_notifications_instance.cc b/components/arc/test/fake_notifications_instance.cc
index 5f8b73daadb5e888312bcf257eb6fe8aabaddcf1..3a9f631ae663244901feb5f797ce64216df2bd24 100644
--- a/components/arc/test/fake_notifications_instance.cc
+++ b/components/arc/test/fake_notifications_instance.cc
@@ -10,20 +10,20 @@ FakeNotificationsInstance::FakeNotificationsInstance() = default;
 FakeNotificationsInstance::~FakeNotificationsInstance() = default;
 
 void FakeNotificationsInstance::SendNotificationEventToAndroid(
-    const mojo::String& key,
+    const std::string& key,
     mojom::ArcNotificationEvent event) {
   events_.emplace_back(key, event);
 }
 
 void FakeNotificationsInstance::CreateNotificationWindow(
-    const mojo::String& key) {}
+    const std::string& key) {}
 
 void FakeNotificationsInstance::CloseNotificationWindow(
-    const mojo::String& key) {}
+    const std::string& key) {}
 
 void FakeNotificationsInstance::Init(mojom::NotificationsHostPtr host_ptr) {}
 
-const std::vector<std::pair<mojo::String, mojom::ArcNotificationEvent>>&
+const std::vector<std::pair<std::string, mojom::ArcNotificationEvent>>&
 FakeNotificationsInstance::events() const {
   return events_;
 }