Make CPDF_TextState have a CPDF_TextStateData rather than inheriting one.

core/fpdfapi/fpdf_render/fpdf_render_text.cpp

Index: core/fpdfapi/fpdf_render/fpdf_render_text.cpp
diff --git a/core/fpdfapi/fpdf_render/fpdf_render_text.cpp b/core/fpdfapi/fpdf_render/fpdf_render_text.cpp
index 16d1235f4db2b4e435d8bf24c1fede4c73a3b2bd..13d1e8bce51092f3f2ff1c4472a95c071a7c4bee 100644
--- a/core/fpdfapi/fpdf_render/fpdf_render_text.cpp
+++ b/core/fpdfapi/fpdf_render/fpdf_render_text.cpp
@@ -231,8 +231,7 @@ FX_BOOL CPDF_RenderStatus::ProcessText(const CPDF_TextObject* textobj,
   if (textobj->m_nChars == 0)
     return TRUE;
 
-  const TextRenderingMode& text_render_mode =
-      textobj->m_TextState.GetObject()->m_TextMode;
+  const TextRenderingMode text_render_mode = textobj->m_TextState.GetTextMode();
   if (text_render_mode == TextRenderingMode::MODE_INVISIBLE)
     return TRUE;
 
@@ -308,7 +307,7 @@ FX_BOOL CPDF_RenderStatus::ProcessText(const CPDF_TextObject* textobj,
     const CFX_Matrix* pDeviceMatrix = pObj2Device;
     CFX_Matrix device_matrix;
     if (bStroke) {
-      const FX_FLOAT* pCTM = textobj->m_TextState.GetObject()->m_CTM;
+      const FX_FLOAT* pCTM = textobj->m_TextState.GetCTM();
       if (pCTM[0] != 1.0f || pCTM[3] != 1.0f) {
         CFX_Matrix ctm(pCTM[0], pCTM[1], pCTM[2], pCTM[3], 0, 0);
         text_matrix.ConcatInverse(ctm);