Use string pools in some dictionaries

core/fpdfdoc/cpdf_interform.cpp

Index: core/fpdfdoc/cpdf_interform.cpp
diff --git a/core/fpdfdoc/cpdf_interform.cpp b/core/fpdfdoc/cpdf_interform.cpp
index 196eeccfba6d26977cd87e20b9d07499ddbc8d83..54eedc6df9a7e05e84ca0a41abd368ea6ea1a0a7 100644
--- a/core/fpdfdoc/cpdf_interform.cpp
+++ b/core/fpdfdoc/cpdf_interform.cpp
@@ -58,7 +58,7 @@ void InitDict(CPDF_Dictionary*& pFormDict, CPDF_Document* pDocument) {
     return;
 
   if (!pFormDict) {
-    pFormDict = new CPDF_Dictionary;
+    pFormDict = new CPDF_Dictionary(pDocument);
     uint32_t dwObjNum = pDocument->AddIndirectObject(pFormDict);
     CPDF_Dictionary* pRoot = pDocument->GetRoot();
     pRoot->SetReferenceFor("AcroForm", pDocument, dwObjNum);
@@ -392,12 +392,12 @@ void AddFont(CPDF_Dictionary*& pFormDict,
 
   CPDF_Dictionary* pDR = pFormDict->GetDictFor("DR");
   if (!pDR) {
-    pDR = new CPDF_Dictionary;
+    pDR = new CPDF_Dictionary(pDocument);
     pFormDict->SetFor("DR", pDR);
   }
   CPDF_Dictionary* pFonts = pDR->GetDictFor("Font");
   if (!pFonts) {
-    pFonts = new CPDF_Dictionary;
+    pFonts = new CPDF_Dictionary(pDocument);
     pDR->SetFor("Font", pFonts);
   }
   if (csNameTag.IsEmpty())
@@ -1496,7 +1496,7 @@ CFDF_Document* CPDF_InterForm::ExportToFDF(
       pMainDict->SetStringFor("F", CFX_ByteString::FromUnicode(wsFilePath));
       pMainDict->SetStringFor("UF", PDF_EncodeText(wsFilePath));
     } else {
-      CPDF_FileSpec filespec;
+      CPDF_FileSpec filespec(pDoc);
       filespec.SetFileName(pdf_path);
       pMainDict->SetFor("F", filespec.GetObj());
     }
@@ -1519,7 +1519,7 @@ CFDF_Document* CPDF_InterForm::ExportToFDF(
         continue;
 
       CFX_WideString fullname = FPDF_GetFullName(pField->GetFieldDict());
-      CPDF_Dictionary* pFieldDict = new CPDF_Dictionary;
+      CPDF_Dictionary* pFieldDict = new CPDF_Dictionary(pDoc);
       pFieldDict->SetFor("T", new CPDF_String(fullname));
       if (pField->GetType() == CPDF_FormField::CheckBox ||
           pField->GetType() == CPDF_FormField::RadioButton) {