Merge IFWL and CFWL classes.

xfa/fwl/core/cfwl_formproxy.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "xfa/fwl/core/cfwl_formproxy.h"
 
 #include <memory>
 #include <utility>
 
 #include "third_party/base/ptr_util.h"
 #include "xfa/fwl/core/cfwl_notedriver.h"
 
 CFWL_FormProxy::CFWL_FormProxy(
     const CFWL_App* app,
     std::unique_ptr<CFWL_WidgetProperties> properties,
-    IFWL_Widget* pOuter)
+    CFWL_Widget* pOuter)
     : CFWL_Form(app, std::move(properties), pOuter) {}
 
 CFWL_FormProxy::~CFWL_FormProxy() {}
 
 FWL_Type CFWL_FormProxy::GetClassID() const {
   return FWL_Type::FormProxy;
 }
 
 bool CFWL_FormProxy::IsInstance(const CFX_WideStringC& wsClass) const {
   if (wsClass == CFX_WideStringC(FWL_CLASS_FormProxy))
     return true;
   return CFWL_Form::IsInstance(wsClass);
 }
 
 void CFWL_FormProxy::Update() {}
 
 void CFWL_FormProxy::DrawWidget(CFX_Graphics* pGraphics,
                                 const CFX_Matrix* pMatrix) {}
 
 void CFWL_FormProxy::OnProcessMessage(CFWL_Message* pMessage) {
   m_pOuter->GetDelegate()->OnProcessMessage(pMessage);
 }