Move ifx_renderdevicedriver to a separate file to share

core/fxge/skia/fx_skia_device.h

Index: core/fxge/skia/fx_skia_device.h
diff --git a/core/fxge/skia/fx_skia_device.h b/core/fxge/skia/fx_skia_device.h
index 5ad66f79b3e529b2e9c7da8a221c9ef548cee05f..4ea1ad1218dbc7b2b4953326e5eb63387e4862ff 100644
--- a/core/fxge/skia/fx_skia_device.h
+++ b/core/fxge/skia/fx_skia_device.h
@@ -7,6 +7,8 @@
 
 #if defined(_SKIA_SUPPORT_)
 
+#include "core/fxge/include/ifx_renderdevicedriver.h"
+
 class SkCanvas;
 class SkMatrix;
 class SkPaint;
@@ -25,7 +27,7 @@ class CFX_SkiaDeviceDriver : public IFX_RenderDeviceDriver {
   ~CFX_SkiaDeviceDriver() override;
 
   /** Options */
-  int GetDeviceCaps(int caps_id) override;
+  int GetDeviceCaps(int caps_id) const override;
 
   /** Save and restore all graphic states */
   void SaveState() override;