Remove CPDF_Object::Release() in favor of direct delete

core/fpdfapi/parser/cpdf_object.h

Index: core/fpdfapi/parser/cpdf_object.h
diff --git a/core/fpdfapi/parser/cpdf_object.h b/core/fpdfapi/parser/cpdf_object.h
index c888605d72a54265ae96ce2c2bce237cc2da124a..8f6491ec724531781e5cb97db64b5ed31abc05f1 100644
--- a/core/fpdfapi/parser/cpdf_object.h
+++ b/core/fpdfapi/parser/cpdf_object.h
@@ -38,6 +38,8 @@ class CPDF_Object {
     REFERENCE
   };
 
+  virtual ~CPDF_Object();
+
   virtual Type GetType() const = 0;
   uint32_t GetObjNum() const { return m_ObjNum; }
   uint32_t GetGenNum() const { return m_GenNum; }
@@ -50,8 +52,6 @@ class CPDF_Object {
   virtual CPDF_Object* CloneDirectObject() const;
   virtual CPDF_Object* GetDirect() const;
 
-  void Release();
-
   virtual CFX_ByteString GetString() const;
   virtual CFX_WideString GetUnicodeText() const;
   virtual FX_FLOAT GetNumber() const;
@@ -94,10 +94,8 @@ class CPDF_Object {
   friend class CPDF_Parser;
   friend class CPDF_Reference;
   friend class CPDF_Stream;
-  friend struct std::default_delete<CPDF_Object>;
 
   CPDF_Object() : m_ObjNum(0), m_GenNum(0) {}
-  virtual ~CPDF_Object();
 
   CPDF_Object* CloneObjectNonCyclic(bool bDirect) const;
 
@@ -118,6 +116,4 @@ class CPDF_Object {
   CPDF_Object(const CPDF_Object& src) {}
 };
 
-using UniqueObject = std::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>>;
-
 #endif  // CORE_FPDFAPI_PARSER_CPDF_OBJECT_H_