Make CPDF_GraphState have a CPDF_GraphStateData instead of inheriting

core/fpdfapi/fpdf_render/fpdf_render.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 "core/fpdfapi/fpdf_render/render_int.h"
 
 #include <memory>
 
@@ skipping 477 matching lines @@
     FillType |= FXFILL_NOPATHSMOOTH;
   if (bStroke)
     FillType |= FX_FILL_STROKE;
   const CPDF_GeneralStateData* pGeneralData =
       static_cast<const CPDF_PageObject*>(pPathObj)->m_GeneralState.GetObject();
   if (pGeneralData && pGeneralData->m_StrokeAdjust)
     FillType |= FX_STROKE_ADJUST;
   if (m_pType3Char)
     FillType |= FX_FILL_TEXT_MODE;
 
-  CFX_GraphStateData graphState(*pPathObj->m_GraphState.GetObject());
+  CPDF_GraphState graphState = pPathObj->m_GraphState;
   if (m_Options.m_Flags & RENDER_THINLINE)
-    graphState.m_LineWidth = 0;
-  return m_pDevice->DrawPathWithBlend(pPathObj->m_Path.GetObject(),
-                                      &path_matrix, &graphState, fill_argb,
-                                      stroke_argb, FillType, m_curBlend);
+    graphState.SetLineWidth(0);
+  return m_pDevice->DrawPathWithBlend(
+      pPathObj->m_Path.GetObject(), &path_matrix, graphState.GetObject(),
+      fill_argb, stroke_argb, FillType, m_curBlend);
 }
 
 CPDF_TransferFunc* CPDF_RenderStatus::GetTransferFunc(CPDF_Object* pObj) const {
   ASSERT(pObj);
   CPDF_DocRenderData* pDocCache = m_pContext->GetDocument()->GetRenderData();
   return pDocCache ? pDocCache->GetTransferFunc(pObj) : nullptr;
 }
 FX_ARGB CPDF_RenderStatus::GetFillArgb(const CPDF_PageObject* pObj,
                                        FX_BOOL bType3) const {
   const CPDF_ColorStateData* pColorData = pObj->m_ColorState.GetObject();
@@ skipping 783 matching lines @@
     m_pDevice->StretchDIBits(m_pBitmapDevice->GetBitmap(), m_Rect.left,
                              m_Rect.top, m_Rect.Width(), m_Rect.Height());
   }
 }
 
 #if defined _SKIA_SUPPORT_
 void CPDF_RenderStatus::DebugVerifyDeviceIsPreMultiplied() const {
   m_pDevice->DebugVerifyBitmapIsPreMultiplied();
 }
 #endif