Remove many delegates, let's see what breaks

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 4224c4d8bd2d431482e14258057d827baea242e2..1e8d6c70a9d1c325da34e4a48f704440082141e1 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -754,8 +754,6 @@ split_static_library("browser") {
     "notifications/login_state_notification_blocker_chromeos.h",
     "notifications/message_center_display_service.cc",
     "notifications/message_center_display_service.h",
-    "notifications/native_notification_delegate.cc",
-    "notifications/native_notification_delegate.h",
     "notifications/native_notification_display_service.cc",
     "notifications/native_notification_display_service.h",
     "notifications/non_persistent_notification_handler.cc",
@@ -770,8 +768,6 @@ split_static_library("browser") {
     "notifications/notification_display_service_factory.cc",
     "notifications/notification_display_service_factory.h",
     "notifications/notification_handler.h",
-    "notifications/notification_object_proxy.cc",
-    "notifications/notification_object_proxy.h",
     "notifications/notification_permission_context.cc",
     "notifications/notification_permission_context.h",
     "notifications/notification_platform_bridge.h",
@@ -782,8 +778,6 @@ split_static_library("browser") {
     "notifications/notifier_state_tracker.h",
     "notifications/notifier_state_tracker_factory.cc",
     "notifications/notifier_state_tracker_factory.h",
-    "notifications/persistent_notification_delegate.cc",
-    "notifications/persistent_notification_delegate.h",
     "notifications/persistent_notification_handler.cc",
     "notifications/persistent_notification_handler.h",
     "notifications/platform_notification_service_impl.cc",