diff --git a/core/fpdfapi/parser/cpdf_document_unittest.cpp b/core/fpdfapi/parser/cpdf_document_unittest.cpp
index c49a77a..a3f7c53 100644
--- a/core/fpdfapi/parser/cpdf_document_unittest.cpp
+++ b/core/fpdfapi/parser/cpdf_document_unittest.cpp
@@ -234,7 +234,7 @@
   dict->SetNewFor<CPDF_Number>("N", page_count);
   auto linearized = pdfium::MakeUnique<TestLinearized>(dict.Get());
   auto parser = pdfium::MakeUnique<CPDF_Parser>();
-  parser->SetLinearizedHeader(std::move(linearized));
+  parser->SetLinearizedHeaderForTesting(std::move(linearized));
   CPDF_TestDocumentAllowSetParser document;
   document.SetParser(std::move(parser));
   document.LoadPages();
diff --git a/core/fpdfapi/parser/cpdf_parser.cpp b/core/fpdfapi/parser/cpdf_parser.cpp
index 3e2819b..1ddc6c5 100644
--- a/core/fpdfapi/parser/cpdf_parser.cpp
+++ b/core/fpdfapi/parser/cpdf_parser.cpp
@@ -938,7 +938,7 @@
   return m_pLinearized ? m_pLinearized->GetFirstPageNo() : 0;
 }
 
-void CPDF_Parser::SetLinearizedHeader(
+void CPDF_Parser::SetLinearizedHeaderForTesting(
     std::unique_ptr<CPDF_LinearizedHeader> pLinearized) {
   m_pLinearized = std::move(pLinearized);
 }
diff --git a/core/fpdfapi/parser/cpdf_parser.h b/core/fpdfapi/parser/cpdf_parser.h
index d44244a..aa86701 100644
--- a/core/fpdfapi/parser/cpdf_parser.h
+++ b/core/fpdfapi/parser/cpdf_parser.h
@@ -118,7 +118,8 @@
 
   CPDF_SyntaxParser* GetSyntax() const { return m_pSyntax.get(); }
 
-  void SetLinearizedHeader(std::unique_ptr<CPDF_LinearizedHeader> pLinearized);
+  void SetLinearizedHeaderForTesting(
+      std::unique_ptr<CPDF_LinearizedHeader> pLinearized);
 
  protected:
   using ObjectType = CPDF_CrossRefTable::ObjectType;