UICommon: Move Wx Graphics Settings functions

Source/Core/UICommon/VideoUtils.h

@@ -0,0 +1,22 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <string>
+#include <vector>
+
+namespace X11Utils
+{
+class XRRConfiguration;
+}
+
+namespace VideoUtils
+{
+#if !defined(__APPLE__)
+std::vector<std::string> GetAvailableResolutions(X11Utils::XRRConfiguration* xrr_config);
+#endif
+
+std::vector<std::string> GetAvailableAntialiasingModes(int& m_msaa_modes);
+}