Cleanup caret show/hide code

xfa/fwl/core/cfwl_edit.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_EDIT_H_
 #define XFA_FWL_CORE_CFWL_EDIT_H_
 
 #include <deque>
@@ skipping 101 matching lines @@
                    int32_t nPageIndex,
                    int32_t nPurpose);
   bool On_PageUnload(CFDE_TxtEdtEngine* pEdit,
                      int32_t nPageIndex,
                      int32_t nPurpose);
   void On_AddDoRecord(CFDE_TxtEdtEngine* pEdit, IFDE_TxtEdtDoRecord* pRecord);
   bool On_Validate(CFDE_TxtEdtEngine* pEdit, CFX_WideString& wsText);
   void SetScrollOffset(FX_FLOAT fScrollOffset);
 
  protected:
-  void ShowCaret(bool bVisible, CFX_RectF* pRect = nullptr);
+  void ShowCaret(CFX_RectF* pRect);
+  void HideCaret(CFX_RectF* pRect);
   const CFX_RectF& GetRTClient() const { return m_rtClient; }
   CFDE_TxtEdtEngine* GetTxtEdtEngine() { return &m_EdtEngine; }
 
  private:
   void DrawTextBk(CFX_Graphics* pGraphics,
                   IFWL_ThemeProvider* pTheme,
                   const CFX_Matrix* pMatrix = nullptr);
   void DrawContent(CFX_Graphics* pGraphics,
                    IFWL_ThemeProvider* pTheme,
                    const CFX_Matrix* pMatrix = nullptr);
@@ skipping 54 matching lines @@
   std::unique_ptr<CFWL_ScrollBar> m_pHorzScrollBar;
   std::unique_ptr<CFWL_Caret> m_pCaret;
   CFX_WideString m_wsCache;
   CFX_WideString m_wsFont;
   std::deque<std::unique_ptr<IFDE_TxtEdtDoRecord>> m_DoRecords;
   int32_t m_iCurRecord;
   int32_t m_iMaxRecord;
 };
 
 #endif  // XFA_FWL_CORE_CFWL_EDIT_H_