The term "Debug Window" is not accurate IMO and we should consider renaming it to a more user-friendly term (only visible in the window title as well as from the tray menu).
#include <qt/createwalletdialog.h>
#include <qt/guiconstants.h>
#include <qt/guiutil.h>
#include <qt/modaloverlay.h>
#include <qt/networkstyle.h>
#include <qt/notificator.h>
#include <qt/openuridialog.h>
#include <qt/optionsdialog.h>
#include <qt/optionsmodel.h>
#include <qt/platformstyle.h>
#include <qt/rpcconsole.h>
#include <qt/utilitydialog.h>
#ifdef ENABLE_WALLET
#include <qt/walletcontroller.h>
#include <qt/walletframe.h>
#include <qt/walletmodel.h>
#include <qt/walletview.h>
#endif 
#ifdef Q_OS_MAC
#include <qt/macdockiconhandler.h>
#endif
#include <chain.h>
#include <chainparams.h>
#include <interfaces/handler.h>
#include <interfaces/node.h>
#include <ui_interface.h>
#include <util/system.h>
#include <QAction>
#include <QApplication>
#include <QComboBox>