Merge IFWL and CFWL classes.

xfa/fxfa/app/xfa_fwladapter.cpp

Index: xfa/fxfa/app/xfa_fwladapter.cpp
diff --git a/xfa/fxfa/app/xfa_fwladapter.cpp b/xfa/fxfa/app/xfa_fwladapter.cpp
index ba38f853a6ef5115b525f79ccc337677aa515932..63a4a92e2400c62029e62512b169ac0fa6832c72 100644
--- a/xfa/fxfa/app/xfa_fwladapter.cpp
+++ b/xfa/fxfa/app/xfa_fwladapter.cpp
@@ -13,7 +13,7 @@ CXFA_FWLAdapterWidgetMgr::CXFA_FWLAdapterWidgetMgr() {}
 
 CXFA_FWLAdapterWidgetMgr::~CXFA_FWLAdapterWidgetMgr() {}
 
-void CXFA_FWLAdapterWidgetMgr::RepaintWidget(IFWL_Widget* pWidget,
+void CXFA_FWLAdapterWidgetMgr::RepaintWidget(CFWL_Widget* pWidget,
                                              const CFX_RectF* pRect) {
   if (!pWidget)
     return;
@@ -26,7 +26,7 @@ void CXFA_FWLAdapterWidgetMgr::RepaintWidget(IFWL_Widget* pWidget,
   pFFWidget->AddInvalidateRect(nullptr);
 }
 
-bool CXFA_FWLAdapterWidgetMgr::GetPopupPos(IFWL_Widget* pWidget,
+bool CXFA_FWLAdapterWidgetMgr::GetPopupPos(CFWL_Widget* pWidget,
                                            FX_FLOAT fMinHeight,
                                            FX_FLOAT fMaxHeight,
                                            const CFX_RectF& rtAnchor,