diff --git a/core/fpdfapi/parser/cpdf_hint_tables.cpp b/core/fpdfapi/parser/cpdf_hint_tables.cpp
index f4f87d5..71a6d36 100644
--- a/core/fpdfapi/parser/cpdf_hint_tables.cpp
+++ b/core/fpdfapi/parser/cpdf_hint_tables.cpp
@@ -51,16 +51,6 @@
 
 CPDF_HintTables::~CPDF_HintTables() {}
 
-uint32_t CPDF_HintTables::GetItemLength(
-    uint32_t index,
-    const std::vector<FX_FILESIZE>& szArray) const {
-  if (szArray.size() < 2 || index > szArray.size() - 2 ||
-      szArray[index] > szArray[index + 1]) {
-    return 0;
-  }
-  return szArray[index + 1] - szArray[index];
-}
-
 bool CPDF_HintTables::ReadPageHintTable(CFX_BitStream* hStream) {
   const uint32_t nPages = m_pLinearized->GetPageCount();
   if (nPages < 1 || nPages >= CPDF_Document::kPageMaxNum)
diff --git a/core/fpdfapi/parser/cpdf_hint_tables.h b/core/fpdfapi/parser/cpdf_hint_tables.h
index 861f231..a161dc6 100644
--- a/core/fpdfapi/parser/cpdf_hint_tables.h
+++ b/core/fpdfapi/parser/cpdf_hint_tables.h
@@ -88,9 +88,6 @@
   bool ReadSharedObjHintTable(CFX_BitStream* hStream, uint32_t offset);
 
  private:
-  uint32_t GetItemLength(uint32_t index,
-                         const std::vector<FX_FILESIZE>& szArray) const;
-
   FX_FILESIZE HintsOffsetToFileOffset(uint32_t hints_offset) const;
 
   // Owned by |m_pDataAvail|.