Move CPDF_NumberTree to fpdfdoc.

core/src/fpdfapi/fpdf_parser/fpdf_parser_utility.cpp

Index: core/src/fpdfapi/fpdf_parser/fpdf_parser_utility.cpp
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_utility.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_utility.cpp
index a08cf7d466645750dea9c34eb1f97c21478e32f8..3bf3f584328df3e570f744c84919f7033fe69cc1 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_utility.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_utility.cpp
@@ -220,44 +220,3 @@ CFX_ByteTextBuf& operator<<(CFX_ByteTextBuf& buf, const CPDF_Object* pObj) {
   }
   return buf;
 }
-
-static CPDF_Object* SearchNumberNode(CPDF_Dictionary* pNode, int num) {
-  CPDF_Array* pLimits = pNode->GetArrayBy("Limits");
-  if (pLimits &&
-      (num < pLimits->GetIntegerAt(0) || num > pLimits->GetIntegerAt(1))) {
-    return NULL;
-  }
-  CPDF_Array* pNumbers = pNode->GetArrayBy("Nums");
-  if (pNumbers) {
-    FX_DWORD dwCount = pNumbers->GetCount() / 2;
-    for (FX_DWORD i = 0; i < dwCount; i++) {
-      int index = pNumbers->GetIntegerAt(i * 2);
-      if (num == index) {
-        return pNumbers->GetElementValue(i * 2 + 1);
-      }
-      if (index > num) {
-        break;
-      }
-    }
-    return NULL;
-  }
-  CPDF_Array* pKids = pNode->GetArrayBy("Kids");
-  if (!pKids) {
-    return NULL;
-  }
-  for (FX_DWORD i = 0; i < pKids->GetCount(); i++) {
-    CPDF_Dictionary* pKid = pKids->GetDictAt(i);
-    if (!pKid) {
-      continue;
-    }
-    CPDF_Object* pFound = SearchNumberNode(pKid, num);
-    if (pFound) {
-      return pFound;
-    }
-  }
-  return NULL;
-}
-
-CPDF_Object* CPDF_NumberTree::LookupValue(int num) {
-  return SearchNumberNode(m_pRoot, num);
-}