Make code compile with clang_use_chrome_plugin (part I)

core/fpdfapi/fpdf_page/cpdf_pagemodule.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/fpdf_page/cpdf_pagemodule.h"
 
+CPDF_PageModule::CPDF_PageModule()
+    : m_StockGrayCS(nullptr, PDFCS_DEVICEGRAY),
+      m_StockRGBCS(nullptr, PDFCS_DEVICERGB),
+      m_StockCMYKCS(nullptr, PDFCS_DEVICECMYK),
+      m_StockPatternCS(nullptr) {}
+
+CPDF_PageModule::~CPDF_PageModule() {}
+
+CPDF_FontGlobals* CPDF_PageModule::GetFontGlobals() {
+  return &m_FontGlobals;
+}
+
 CPDF_ColorSpace* CPDF_PageModule::GetStockCS(int family) {
   if (family == PDFCS_DEVICEGRAY)
     return &m_StockGrayCS;
   if (family == PDFCS_DEVICERGB)
     return &m_StockRGBCS;
   if (family == PDFCS_DEVICECMYK)
     return &m_StockCMYKCS;
   if (family == PDFCS_PATTERN)
     return &m_StockPatternCS;
   return nullptr;
 }
+
+void CPDF_PageModule::ClearStockFont(CPDF_Document* pDoc) {
+  m_FontGlobals.Clear(pDoc);
+}