Stop using Encoding array to get unicode from charcode in Type 3 fonts

core/fpdfapi/font/cpdf_type3font.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/font/cpdf_type3font.h"
 
 #include <utility>
 
@@ skipping 54 matching lines @@
       count = 256;
     if (StartChar + count > 256)
       count = 256 - StartChar;
     for (size_t i = 0; i < count; i++) {
       m_CharWidthL[StartChar + i] =
           FXSYS_round(pWidthArray->GetNumberAt(i) * xscale * 1000);
     }
   }
   m_pCharProcs = m_pFontDict->GetDictFor("CharProcs");
   CPDF_Object* pEncoding = m_pFontDict->GetDirectObjectFor("Encoding");
-  if (pEncoding) {
+  if (pEncoding)
     LoadPDFEncoding(pEncoding, m_BaseEncoding, &m_CharNames, false, false);
-    if (!m_CharNames.empty()) {
-      for (int i = 0; i < 256; i++) {
-        m_Encoding.m_Unicodes[i] =
-            PDF_UnicodeFromAdobeName(m_CharNames[i].c_str());
-        if (m_Encoding.m_Unicodes[i] == 0) {
-          m_Encoding.m_Unicodes[i] = i;
-        }
-      }
-    }
-  }
   return true;
 }
 
 void CPDF_Type3Font::CheckType3FontMetrics() {
   CheckFontMetrics();
 }
 
 CPDF_Type3Char* CPDF_Type3Font::LoadChar(uint32_t charcode) {
   if (m_CharLoadingDepth >= FPDF_MAX_TYPE3_FORM_LEVEL)
     return nullptr;
@@ skipping 56 matching lines @@
     return m_CharWidthL[charcode];
 
   const CPDF_Type3Char* pChar = LoadChar(charcode);
   return pChar ? pChar->m_Width : 0;
 }
 
 FX_RECT CPDF_Type3Font::GetCharBBox(uint32_t charcode) {
   const CPDF_Type3Char* pChar = LoadChar(charcode);
   return pChar ? pChar->m_BBox : FX_RECT();
 }