DolphinQt: Move graphics config to main Settings window.

Source/Core/DolphinQt/Config/Graphics/GraphicsPane.h

@@ -0,0 +1,34 @@
+// Copyright 2017 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <QWidget>
+
+class MainWindow;
+
+namespace Config
+{
+class Layer;
+}  // namespace Config
+
+class GraphicsPane final : public QWidget
+{
+  Q_OBJECT
+public:
+  explicit GraphicsPane(MainWindow* main_window, Config::Layer* config_layer);
+
+  Config::Layer* GetConfigLayer();
+
+signals:
+  void BackendChanged(const QString& backend);
+  void UseFastTextureSamplingChanged();
+  void UseGPUTextureDecodingChanged();
+
+private:
+  void CreateMainLayout();
+  void OnBackendChanged(const QString& backend);
+
+  MainWindow* const m_main_window;
+  Config::Layer* const m_config_layer;
+};