Merge IFWL and CFWL classes.

xfa/fwl/core/cfwl_caret.h

Index: xfa/fwl/core/cfwl_caret.h
diff --git a/xfa/fwl/core/cfwl_caret.h b/xfa/fwl/core/cfwl_caret.h
index 9e68cdf09d23bbc2cf10c68c2a281379d15bad2a..ad38f7a3ed08169e9c8f73af67c473b9195d16fe 100644
--- a/xfa/fwl/core/cfwl_caret.h
+++ b/xfa/fwl/core/cfwl_caret.h
@@ -10,22 +10,22 @@
 #include <memory>
 
 #include "xfa/fwl/core/cfwl_timer.h"
-#include "xfa/fwl/core/ifwl_widget.h"
+#include "xfa/fwl/core/cfwl_widget.h"
 #include "xfa/fxgraphics/cfx_color.h"
 
 class CFWL_WidgetProperties;
-class IFWL_Widget;
+class CFWL_Widget;
 
 #define FWL_STATE_CAT_HightLight 1
 
-class CFWL_Caret : public IFWL_Widget {
+class CFWL_Caret : public CFWL_Widget {
  public:
   CFWL_Caret(const CFWL_App* app,
              std::unique_ptr<CFWL_WidgetProperties> properties,
-             IFWL_Widget* pOuter);
+             CFWL_Widget* pOuter);
   ~CFWL_Caret() override;
 
-  // IFWL_Widget
+  // CFWL_Widget
   FWL_Type GetClassID() const override;
   void DrawWidget(CFX_Graphics* pGraphics,
                   const CFX_Matrix* pMatrix = nullptr) override;