Cleanup some PWL_FontMap methods

fpdfsdk/pdfwindow/PWL_FontMap.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 "fpdfsdk/pdfwindow/PWL_FontMap.h"
 
 #include "core/fpdfapi/fpdf_font/include/cpdf_font.h"
 #include "core/fpdfapi/fpdf_font/include/cpdf_fontencoding.h"
@@ skipping 25 matching lines @@
 
 CPWL_FontMap::CPWL_FontMap(CFX_SystemHandler* pSystemHandler)
     : m_pSystemHandler(pSystemHandler) {
   ASSERT(m_pSystemHandler);
 }
 
 CPWL_FontMap::~CPWL_FontMap() {
   Empty();
 }
 
-void CPWL_FontMap::SetSystemHandler(CFX_SystemHandler* pSystemHandler) {
-  m_pSystemHandler = pSystemHandler;
-}
-
 CPDF_Document* CPWL_FontMap::GetDocument() {
   if (!m_pPDFDoc) {
     if (CPDF_ModuleMgr::Get()) {
       m_pPDFDoc.reset(new CPDF_Document(nullptr));
       m_pPDFDoc->CreateNewDoc();
     }
   }
 
   return m_pPDFDoc.get();
 }
@@ skipping 209 matching lines @@
   }
 
   return "";
 }
 
 CFX_ByteString CPWL_FontMap::GetNativeFont(int32_t nCharset) {
   if (nCharset == DEFAULT_CHARSET)
     nCharset = GetNativeCharset();
 
   CFX_ByteString sFontName = GetDefaultFontByCharset(nCharset);
-  if (m_pSystemHandler) {
-    if (m_pSystemHandler->FindNativeTrueTypeFont(sFontName))
-      return sFontName;
+  if (m_pSystemHandler->FindNativeTrueTypeFont(sFontName))
+    return sFontName;
 
-    sFontName.clear();
-  }
+  sFontName.clear();
   return sFontName;
 }
 
 CPDF_Font* CPWL_FontMap::AddFontToDocument(CPDF_Document* pDoc,
                                            CFX_ByteString& sFontName,
                                            uint8_t nCharset) {
   if (IsStandardFont(sFontName))
     return AddStandardFont(pDoc, sFontName);
 
   return AddSystemFont(pDoc, sFontName, nCharset);
@@ skipping 20 matching lines @@
                                        CFX_ByteString& sFontName,
                                        uint8_t nCharset) {
   if (!pDoc)
     return nullptr;
 
   if (sFontName.IsEmpty())
     sFontName = GetNativeFont(nCharset);
   if (nCharset == DEFAULT_CHARSET)
     nCharset = GetNativeCharset();
 
-  if (m_pSystemHandler)
-    return m_pSystemHandler->AddNativeTrueTypeFontToPDF(pDoc, sFontName,
-                                                        nCharset);
-
-  return nullptr;
+  return m_pSystemHandler->AddNativeTrueTypeFontToPDF(pDoc, sFontName,
+                                                      nCharset);
 }
 
 CFX_ByteString CPWL_FontMap::EncodeFontAlias(const CFX_ByteString& sFontName,
                                              int32_t nCharset) {
   CFX_ByteString sPostfix;
   sPostfix.Format("_%02X", nCharset);
   return EncodeFontAlias(sFontName) + sPostfix;
 }
 
 CFX_ByteString CPWL_FontMap::EncodeFontAlias(const CFX_ByteString& sFontName) {
@@ skipping 137 matching lines @@
     return RUSSIAN_CHARSET;
 
   if (word >= 0x0100 && word <= 0x024F)
     return EASTEUROPE_CHARSET;
 
   if (word >= 0x1E00 && word <= 0x1EFF)
     return VIETNAMESE_CHARSET;
 
   return ANSI_CHARSET;
 }
-
-CPWL_DocFontMap::CPWL_DocFontMap(CFX_SystemHandler* pSystemHandler,
-                                 CPDF_Document* pAttachedDoc)
-    : CPWL_FontMap(pSystemHandler), m_pAttachedDoc(pAttachedDoc) {}
-
-CPWL_DocFontMap::~CPWL_DocFontMap() {}
-
-CPDF_Document* CPWL_DocFontMap::GetDocument() {
-  return m_pAttachedDoc;
-}