Merge the CFWL_*Imp classes into the IFWL_* classes.

xfa/fwl/basewidget/fwl_caretimp.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_BASEWIDGET_FWL_CARETIMP_H_
-#define XFA_FWL_BASEWIDGET_FWL_CARETIMP_H_
-
-#include <memory>
-
-#include "xfa/fwl/core/fwl_widgetimp.h"
-#include "xfa/fwl/core/ifwl_timer.h"
-#include "xfa/fwl/core/ifwl_widget.h"
-#include "xfa/fxgraphics/cfx_color.h"
-
-class CFWL_WidgetImpProperties;
-class IFWL_Widget;
-class CFWL_CaretImpDelegate;
-
-class CFWL_CaretImp : public CFWL_WidgetImp {
- public:
-  CFWL_CaretImp(const CFWL_WidgetImpProperties& properties,
-                IFWL_Widget* pOuter);
-  ~CFWL_CaretImp() override;
-
-  // CFWL_WidgetImp
-  FWL_Error GetClassName(CFX_WideString& wsClass) const override;
-  FWL_Type GetClassID() const override;
-  FWL_Error Initialize() override;
-  FWL_Error Finalize() override;
-  FWL_Error DrawWidget(CFX_Graphics* pGraphics,
-                       const CFX_Matrix* pMatrix = nullptr) override;
-
-  void ShowCaret(FX_BOOL bFlag = TRUE);
-  FWL_Error GetFrequency(uint32_t& elapse);
-  FWL_Error SetFrequency(uint32_t elapse);
-  FWL_Error SetColor(CFX_Color crFill);
-
- protected:
-  friend class CFWL_CaretImpDelegate;
-  friend class CFWL_CaretTimer;
-
-  class CFWL_CaretTimer : public IFWL_Timer {
-   public:
-    explicit CFWL_CaretTimer(CFWL_CaretImp* pCaret);
-    ~CFWL_CaretTimer() override {}
-    void Run(IFWL_TimerInfo* hTimer) override;
-    CFWL_CaretImp* const m_pCaret;
-  };
-
-  void DrawCaretBK(CFX_Graphics* pGraphics,
-                   IFWL_ThemeProvider* pTheme,
-                   const CFX_Matrix* pMatrix);
-
-  std::unique_ptr<CFWL_CaretTimer> m_pTimer;
-  IFWL_TimerInfo* m_pTimerInfo;  // not owned.
-  uint32_t m_dwElapse;
-  CFX_Color m_crFill;
-  FX_BOOL m_bSetColor;
-};
-
-class CFWL_CaretImpDelegate : public CFWL_WidgetImpDelegate {
- public:
-  CFWL_CaretImpDelegate(CFWL_CaretImp* pOwner);
-  void OnProcessMessage(CFWL_Message* pMessage) override;
-  void OnDrawWidget(CFX_Graphics* pGraphics,
-                    const CFX_Matrix* pMatrix = nullptr) override;
-
- protected:
-  CFWL_CaretImp* m_pOwner;
-};
-
-#endif  // XFA_FWL_BASEWIDGET_FWL_CARETIMP_H_