Added auto-scroll-inactive-chat option.

Telegram/SourceFiles/settings/settings_experimental.cpp

@@ -16,6 +16,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "base/options.h"
 #include "core/application.h"
 #include "chat_helpers/tabbed_panel.h"
+#include "history/history_widget.h"
 #include "lang/lang_keys.h"
 #include "media/player/media_player_instance.h"
 #include "webview/webview_embed.h"
@@ -137,6 +138,7 @@ void SetupExperimental(
 	addToggle(Media::Player::kOptionDisableAutoplayNext);
 	addToggle(Settings::kOptionMonoSettingsIcons);
 	addToggle(Webview::kOptionWebviewDebugEnabled);
+	addToggle(kOptionAutoScrollInactiveChat);
 }
 
 } // namespace