Merge IFWL and CFWL classes.

xfa/fwl/core/cfwl_app.h

 // 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
 
 #ifndef XFA_FWL_CORE_CFWL_APP_H_
 #define XFA_FWL_CORE_CFWL_APP_H_
 
 #include <memory>
 
 #include "core/fxcrt/fx_string.h"
 
 class CFWL_NoteDriver;
 class CFWL_WidgetMgr;
 class CXFA_FFApp;
 class CXFA_FWLAdapterWidgetMgr;
-class IFWL_Widget;
+class CFWL_Widget;
 
 enum FWL_KeyFlag {
   FWL_KEYFLAG_Ctrl = 1 << 0,
   FWL_KEYFLAG_Alt = 1 << 1,
   FWL_KEYFLAG_Shift = 1 << 2,
   FWL_KEYFLAG_Command = 1 << 3,
   FWL_KEYFLAG_LButton = 1 << 4,
   FWL_KEYFLAG_RButton = 1 << 5,
   FWL_KEYFLAG_MButton = 1 << 6
 };
 
 class CFWL_App {
  public:
   explicit CFWL_App(CXFA_FFApp* pAdapter);
   ~CFWL_App();
 
   CXFA_FFApp* GetAdapterNative() const { return m_pAdapterNative; }
   CFWL_WidgetMgr* GetWidgetMgr() const { return m_pWidgetMgr.get(); }
   CFWL_NoteDriver* GetNoteDriver() const { return m_pNoteDriver.get(); }
 
  private:
   CXFA_FFApp* const m_pAdapterNative;
   std::unique_ptr<CFWL_WidgetMgr> m_pWidgetMgr;
   std::unique_ptr<CFWL_NoteDriver> m_pNoteDriver;
 };
 
 #endif  // XFA_FWL_CORE_CFWL_APP_H_