Use string pools in some dictionaries

core/fpdfapi/fpdf_edit/cpdf_pagecontentgenerator.cpp

Index: core/fpdfapi/fpdf_edit/cpdf_pagecontentgenerator.cpp
diff --git a/core/fpdfapi/fpdf_edit/cpdf_pagecontentgenerator.cpp b/core/fpdfapi/fpdf_edit/cpdf_pagecontentgenerator.cpp
index d3d55b91b5ec46a6777c65afd2ed95169ce7d66a..df475184f01a0a3f397a054ffadecba0bd77e11c 100644
--- a/core/fpdfapi/fpdf_edit/cpdf_pagecontentgenerator.cpp
+++ b/core/fpdfapi/fpdf_edit/cpdf_pagecontentgenerator.cpp
@@ -63,13 +63,13 @@ CFX_ByteString CPDF_PageContentGenerator::RealizeResource(
     CPDF_Object* pResourceObj,
     const CFX_ByteString& bsType) {
   if (!m_pPage->m_pResources) {
-    m_pPage->m_pResources = new CPDF_Dictionary;
+    m_pPage->m_pResources = new CPDF_Dictionary(m_pDocument);
     int objnum = m_pDocument->AddIndirectObject(m_pPage->m_pResources);
     m_pPage->m_pFormDict->SetReferenceFor("Resources", m_pDocument, objnum);
   }
   CPDF_Dictionary* pResList = m_pPage->m_pResources->GetDictFor(bsType);
   if (!pResList) {
-    pResList = new CPDF_Dictionary;
+    pResList = new CPDF_Dictionary(m_pDocument);
     m_pPage->m_pResources->SetFor(bsType, pResList);
   }
   m_pDocument->AddIndirectObject(pResourceObj);
@@ -113,7 +113,7 @@ void CPDF_PageContentGenerator::ProcessForm(CFX_ByteTextBuf& buf,
     return;
   }
   CPDF_Stream* pStream = new CPDF_Stream(nullptr, 0, nullptr);
-  CPDF_Dictionary* pFormDict = new CPDF_Dictionary;
+  CPDF_Dictionary* pFormDict = new CPDF_Dictionary(m_pDocument);
   pFormDict->SetNameFor("Type", "XObject");
   pFormDict->SetNameFor("Subtype", "Form");
   CFX_FloatRect bbox = m_pPage->GetPageBBox();