Remove IFGAS_FontMgr and clean up (the renamed) CFGAS_FontMgr a little.

xfa/fxfa/app/xfa_fontmgr.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 "xfa/fxfa/xfa_fontmgr.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 1731 matching lines @@
 CXFA_DefFontMgr::~CXFA_DefFontMgr() {
   for (int32_t i = 0; i < m_CacheFonts.GetSize(); i++)
     m_CacheFonts[i]->Release();
 }
 
 CFGAS_GEFont* CXFA_DefFontMgr::GetFont(CXFA_FFDoc* hDoc,
                                        const CFX_WideStringC& wsFontFamily,
                                        uint32_t dwFontStyles,
                                        uint16_t wCodePage) {
   CFX_WideString wsFontName(wsFontFamily);
-  IFGAS_FontMgr* pFDEFontMgr = hDoc->GetApp()->GetFDEFontMgr();
+  CFGAS_FontMgr* pFDEFontMgr = hDoc->GetApp()->GetFDEFontMgr();
   CFGAS_GEFont* pFont =
       pFDEFontMgr->LoadFont(wsFontName.c_str(), dwFontStyles, wCodePage);
   if (!pFont) {
     const XFA_FONTINFO* pCurFont =
         XFA_GetFontINFOByFontName(wsFontName.AsStringC());
     if (pCurFont && pCurFont->pReplaceFont) {
       uint32_t dwStyle = 0;
       if (dwFontStyles & FX_FONTSTYLE_Bold) {
         dwStyle |= FX_FONTSTYLE_Bold;
       }
@@ skipping 23 matching lines @@
   if (pFont)
     m_CacheFonts.Add(pFont);
   return pFont;
 }
 
 CFGAS_GEFont* CXFA_DefFontMgr::GetDefaultFont(
     CXFA_FFDoc* hDoc,
     const CFX_WideStringC& wsFontFamily,
     uint32_t dwFontStyles,
     uint16_t wCodePage) {
-  IFGAS_FontMgr* pFDEFontMgr = hDoc->GetApp()->GetFDEFontMgr();
+  CFGAS_FontMgr* pFDEFontMgr = hDoc->GetApp()->GetFDEFontMgr();
   CFGAS_GEFont* pFont =
       pFDEFontMgr->LoadFont(L"Arial Narrow", dwFontStyles, wCodePage);
   if (!pFont) {
     pFont = pFDEFontMgr->LoadFont(static_cast<const FX_WCHAR*>(nullptr),
                                   dwFontStyles, wCodePage);
   }
 
   ASSERT(pFont);
   if (pFont)
     m_CacheFonts.Add(pFont);
@@ skipping 22 matching lines @@
       pDoc->GetRoot()->GetDictFor("AcroForm")->GetDictFor("DR");
   if (!pFontSetDict) {
     return nullptr;
   }
   pFontSetDict = pFontSetDict->GetDictFor("Font");
   if (!pFontSetDict) {
     return nullptr;
   }
   CFX_ByteString name = strPsName;
   name.Remove(' ');
-  IFGAS_FontMgr* pFDEFontMgr = m_pDoc->GetApp()->GetFDEFontMgr();
+  CFGAS_FontMgr* pFDEFontMgr = m_pDoc->GetApp()->GetFDEFontMgr();
   for (const auto& it : *pFontSetDict) {
     const CFX_ByteString& key = it.first;
     CPDF_Object* pObj = it.second;
     if (!PsNameMatchDRFontName(name.AsStringC(), bBold, bItalic, key,
                                bStrictMatch)) {
       continue;
     }
     CPDF_Dictionary* pFontDict = ToDictionary(pObj->GetDirect());
     if (!pFontDict || pFontDict->GetStringFor("Type") != "Font") {
       return nullptr;
@@ skipping 200 matching lines @@
     m_PDFFontMgrMap[hDoc].reset(new CXFA_PDFFontMgr(hDoc));
 }
 
 void CXFA_FontMgr::ReleaseDocFonts(CXFA_FFDoc* hDoc) {
   m_PDFFontMgrMap.erase(hDoc);
 }
 
 void CXFA_FontMgr::SetDefFontMgr(std::unique_ptr<CXFA_DefFontMgr> pFontMgr) {
   m_pDefFontMgr = std::move(pFontMgr);
 }