More better const-ness in CFX_CountRef<>

core/fpdfapi/fpdf_page/cpdf_textobject.cpp

 // Copyright 2016 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 "core/fpdfapi/fpdf_page/include/cpdf_textobject.h"
 
 #include "core/fpdfapi/fpdf_font/cpdf_cidfont.h"
 #include "core/fpdfapi/fpdf_font/include/cpdf_font.h"
@@ skipping 115 matching lines @@
   obj->m_PosX = m_PosX;
   obj->m_PosY = m_PosY;
   return obj;
 }
 
 CPDF_PageObject::Type CPDF_TextObject::GetType() const {
   return TEXT;
 }
 
 void CPDF_TextObject::Transform(const CFX_Matrix& matrix) {
-  m_TextState.GetPrivateCopy();
   CFX_Matrix text_matrix;
   GetTextMatrix(&text_matrix);
   text_matrix.Concat(matrix);
-  FX_FLOAT* pTextMatrix = m_TextState.GetMatrix();
+
+  FX_FLOAT* pTextMatrix = m_TextState.GetMutableMatrix();
   pTextMatrix[0] = text_matrix.GetA();
   pTextMatrix[1] = text_matrix.GetC();
   pTextMatrix[2] = text_matrix.GetB();
   pTextMatrix[3] = text_matrix.GetD();
   m_PosX = text_matrix.GetE();
   m_PosY = text_matrix.GetF();
   CalcPositionData(nullptr, nullptr, 0);
 }
 
 bool CPDF_TextObject::IsText() const {
@@ skipping 229 matching lines @@
   m_PosY = y;
   m_Left += dx;
   m_Right += dx;
   m_Top += dy;
   m_Bottom += dy;
 }
 
 void CPDF_TextObject::RecalcPositionData() {
   CalcPositionData(nullptr, nullptr, 1);
 }