Update CPDF_IndirectObjectHolder APIs for unique objects

core/fpdfapi/parser/cpdf_indirect_object_holder.h

Index: core/fpdfapi/parser/cpdf_indirect_object_holder.h
diff --git a/core/fpdfapi/parser/cpdf_indirect_object_holder.h b/core/fpdfapi/parser/cpdf_indirect_object_holder.h
index da4e942b5da73ca92fca89725e773febeebd827f..074e428d4350d92e815a7f61c4b5b458dcbbd1d4 100644
--- a/core/fpdfapi/parser/cpdf_indirect_object_holder.h
+++ b/core/fpdfapi/parser/cpdf_indirect_object_holder.h
@@ -10,9 +10,14 @@
 #include <map>
 #include <memory>
 
+#include "core/fpdfapi/parser/cpdf_object.h"
+#include "core/fxcrt/cfx_string_pool_template.h"
+#include "core/fxcrt/cfx_weak_ptr.h"
 #include "core/fxcrt/fx_system.h"
 
-class CPDF_Object;
+class CPDF_Array;
+class CPDF_Dictionary;
+class CPDF_Stream;
 
 class CPDF_IndirectObjectHolder {
  public:
@@ -24,12 +29,23 @@ class CPDF_IndirectObjectHolder {
 
   CPDF_Object* GetIndirectObject(uint32_t objnum) const;
   CPDF_Object* GetOrParseIndirectObject(uint32_t objnum);
-  void ReleaseIndirectObject(uint32_t objnum);
+  void DeleteIndirectObject(uint32_t objnum);
+
+  // Take ownership of |pObj|, returns unowned pointer to it.
+  CPDF_Object* AddIndirectObject(UniqueObject pObj);
+
+  // Adds and owns a new object, returns unowned pointer to it.
+  CPDF_Array* AddIndirectArray();
+  CPDF_Dictionary* AddIndirectDictionary();
+  CPDF_Dictionary* AddIndirectDictionary(
+      const CFX_WeakPtr<CFX_ByteStringPool>& pPool);
+  CPDF_Stream* AddIndirectStream();
+  CPDF_Stream* AddIndirectStream(uint8_t* pData,
+                                 uint32_t size,
+                                 CPDF_Dictionary* pDict);
 
-  // Take ownership of |pObj|.
-  uint32_t AddIndirectObject(CPDF_Object* pObj);
   bool ReplaceIndirectObjectIfHigherGeneration(uint32_t objnum,
-                                               CPDF_Object* pObj);
+                                               UniqueObject pObj);
 
   uint32_t GetLastObjNum() const { return m_LastObjNum; }
   void SetLastObjNum(uint32_t objnum) { m_LastObjNum = objnum; }
@@ -42,6 +58,8 @@ class CPDF_IndirectObjectHolder {
 
  private:
   uint32_t m_LastObjNum;
+
+  // Ordinary deleter, not Release().
   std::map<uint32_t, std::unique_ptr<CPDF_Object>> m_IndirectObjs;
 };