| Flutter Linux Embedder |

- EmbedderSendKeyEvent : fl_key_embedder_responder.h
- FlEnginePlatformMessageHandler : fl_engine_private.h
- FlEngineUpdateSemanticsHandler : fl_engine_private.h
- FlKeyChannelResponderMock : fl_key_channel_responder.h
- FlTaskRunnerTask : fl_task_runner.cc
- FlTextBoundaryCallback : fl_accessible_text_field.cc
- FlutterDesktopBinaryReply : flutter_messenger.h
- FlutterDesktopMessageCallback : flutter_messenger.h
- FlutterDesktopMessageResponseHandle : flutter_messenger.h
- FlutterDesktopMessengerRef : flutter_messenger.h
- FlutterDesktopOnPluginRegistrarDestroyed : flutter_plugin_registrar.h
- FlutterDesktopPluginRegistrarRef : flutter_plugin_registrar.h
- FlutterDesktopTextureRegistrarRef : flutter_texture_registrar.h
- FlValue : fl_value.h
- FlValueConverter : fl_key_channel_responder.h
- KeyboardLayoutNotifier : fl_keyboard_view_delegate.h