Merge to XFA: Replace several more CFX_MapPtrToPtr with std::set or std::map

core/include/fpdfapi/fpdf_objects.h

Index: core/include/fpdfapi/fpdf_objects.h
diff --git a/core/include/fpdfapi/fpdf_objects.h b/core/include/fpdfapi/fpdf_objects.h
index 143e7d71c27ae9e0d0ec48cb817c9ffee348b61b..8522e9be64c1bd90afe0b330d744e34629249f98 100644
--- a/core/include/fpdfapi/fpdf_objects.h
+++ b/core/include/fpdfapi/fpdf_objects.h
@@ -7,6 +7,8 @@
 #ifndef CORE_INCLUDE_FPDFAPI_FPDF_OBJECTS_H_
 #define CORE_INCLUDE_FPDFAPI_FPDF_OBJECTS_H_
 
+#include <set>
+
 #include "core/include/fxcrt/fx_coordinates.h"
 #include "core/include/fxcrt/fx_system.h"
 
@@ -129,7 +131,8 @@ class CPDF_Object {
 
  private:
   CPDF_Object(const CPDF_Object& src) {}
-  CPDF_Object* CloneInternal(FX_BOOL bDirect, CFX_MapPtrToPtr* visited) const;
+  CPDF_Object* CloneInternal(FX_BOOL bDirect,
+                             std::set<FX_DWORD>* visited) const;
 };
 class CPDF_Boolean : public CPDF_Object {
  public: