Merge IFWL and CFWL classes.

xfa/fwl/theme/cfwl_carettp.cpp

Index: xfa/fwl/theme/cfwl_carettp.cpp
diff --git a/xfa/fwl/theme/cfwl_carettp.cpp b/xfa/fwl/theme/cfwl_carettp.cpp
index 55de2a7d4f16797702eb224c415a2b4c9f4defcb..ff8c036ecba7e7428ed3442bb308ac121de3a398 100644
--- a/xfa/fwl/theme/cfwl_carettp.cpp
+++ b/xfa/fwl/theme/cfwl_carettp.cpp
@@ -8,14 +8,14 @@
 
 #include "xfa/fwl/core/cfwl_caret.h"
 #include "xfa/fwl/core/cfwl_themebackground.h"
-#include "xfa/fwl/core/ifwl_widget.h"
+#include "xfa/fwl/core/cfwl_widget.h"
 #include "xfa/fxgraphics/cfx_color.h"
 #include "xfa/fxgraphics/cfx_path.h"
 
 CFWL_CaretTP::CFWL_CaretTP() {}
 CFWL_CaretTP::~CFWL_CaretTP() {}
 
-bool CFWL_CaretTP::IsValidWidget(IFWL_Widget* pWidget) {
+bool CFWL_CaretTP::IsValidWidget(CFWL_Widget* pWidget) {
   return pWidget && pWidget->GetClassID() == FWL_Type::Caret;
 }