Use string pools in some dictionaries

fpdfsdk/fpdfeditpage.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 "public/fpdf_edit.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 97 matching lines @@
   page_index = std::min(std::max(page_index, 0), pDoc->GetPageCount());
   CPDF_Dictionary* pPageDict = pDoc->CreateNewPage(page_index);
   if (!pPageDict)
     return nullptr;
 
   CPDF_Array* pMediaBoxArray = new CPDF_Array;
   pMediaBoxArray->Add(new CPDF_Number(0));
   pMediaBoxArray->Add(new CPDF_Number(0));
   pMediaBoxArray->Add(new CPDF_Number(FX_FLOAT(width)));
   pMediaBoxArray->Add(new CPDF_Number(FX_FLOAT(height)));
-
   pPageDict->SetFor("MediaBox", pMediaBoxArray);
   pPageDict->SetFor("Rotate", new CPDF_Number(0));
-  pPageDict->SetFor("Resources", new CPDF_Dictionary);
+  pPageDict->SetFor("Resources", new CPDF_Dictionary(pDoc));
 
 #ifdef PDF_ENABLE_XFA
   CPDFXFA_Page* pPage =
       new CPDFXFA_Page((CPDFXFA_Document*)document, page_index);
   pPage->LoadPDFPage(pPageDict);
 #else   // PDF_ENABLE_XFA
   CPDF_Page* pPage = new CPDF_Page(pDoc, pPageDict, true);
   pPage->ParseContent();
 #endif  // PDF_ENABLE_XFA
 
@@ skipping 178 matching lines @@
 
 DLLEXPORT void STDCALL FPDFPage_SetRotation(FPDF_PAGE page, int rotate) {
   CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
   if (!IsPageObject(pPage))
     return;
 
   CPDF_Dictionary* pDict = pPage->m_pFormDict;
   rotate %= 4;
   pDict->SetFor("Rotate", new CPDF_Number(rotate * 90));
 }