Update CPDF_IndirectObjectHolder APIs for unique objects

fpdfsdk/cpdfsdk_baannot.cpp

Index: fpdfsdk/cpdfsdk_baannot.cpp
diff --git a/fpdfsdk/cpdfsdk_baannot.cpp b/fpdfsdk/cpdfsdk_baannot.cpp
index 72468e180ffe38fc6b688da688e536e0f5e5505d..ad9b8cf9bdf98fc18121f524f51af02b8b2ac20a 100644
--- a/fpdfsdk/cpdfsdk_baannot.cpp
+++ b/fpdfsdk/cpdfsdk_baannot.cpp
@@ -316,10 +316,9 @@ void CPDFSDK_BAAnnot::WriteAppearance(const CFX_ByteString& sAPType,
   }
 
   if (!pStream) {
-    pStream = new CPDF_Stream;
     CPDF_Document* pDoc = m_pPageView->GetPDFDocument();
-    pParentDict->SetReferenceFor(sAPType, pDoc,
-                                 pDoc->AddIndirectObject(pStream));
+    pStream = pDoc->AddIndirectStream();
+    pParentDict->SetReferenceFor(sAPType, pDoc, pStream);
   }
 
   CPDF_Dictionary* pStreamDict = pStream->GetDict();
@@ -354,8 +353,9 @@ void CPDFSDK_BAAnnot::SetAction(const CPDF_Action& action) {
   CPDF_Dictionary* pDict = action.GetDict();
   if (pDict != m_pAnnot->GetAnnotDict()->GetDictFor("A")) {
     CPDF_Document* pDoc = m_pPageView->GetPDFDocument();
-    m_pAnnot->GetAnnotDict()->SetReferenceFor("A", pDoc,
-                                              pDoc->AddIndirectObject(pDict));
+    m_pAnnot->GetAnnotDict()->SetReferenceFor(
+        "A", pDoc,
+        pDoc->AddIndirectObject(UniqueDictionary(pDict)));  // Owner?
   }
 }