Make code compile with clang_use_chrome_plugin (part V)

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/include/xfa_fontmgr.h"
 
 #include <algorithm>
 #include <utility>
@@ skipping 1720 matching lines @@
       break;
     } else if (dwFontNameHash < dwCurFontNameHash) {
       iStart = iMid + 1;
     } else {
       iEnd = iMid - 1;
     }
   } while (iEnd >= iStart);
   return pFontInfo;
 }
 
+CXFA_DefFontMgr::CXFA_DefFontMgr() {}
+
 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);
@@ skipping 300 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);
 }