Split fpdfdoc/include/fpdf_doc.h into individual classes.

core/fpdfdoc/include/cpdf_nametree.h

Index: core/fpdfdoc/include/cpdf_nametree.h
diff --git a/core/fpdfdoc/include/cpdf_nametree.h b/core/fpdfdoc/include/cpdf_nametree.h
new file mode 100644
index 0000000000000000000000000000000000000000..39a520ddfa122602dfa55c22ece6e4ad314fd0b3
--- /dev/null
+++ b/core/fpdfdoc/include/cpdf_nametree.h
@@ -0,0 +1,34 @@
+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef CORE_FPDFDOC_INCLUDE_CPDF_NAMETREE_H_
+#define CORE_FPDFDOC_INCLUDE_CPDF_NAMETREE_H_
+
+#include "core/fxcrt/include/fx_string.h"
+
+class CPDF_Array;
+class CPDF_Dictionary;
+class CPDF_Document;
+class CPDF_Object;
+
+class CPDF_NameTree {
+ public:
+  explicit CPDF_NameTree(CPDF_Dictionary* pRoot) : m_pRoot(pRoot) {}
+  CPDF_NameTree(CPDF_Document* pDoc, const CFX_ByteString& category);
+
+  CPDF_Object* LookupValue(int nIndex, CFX_ByteString& csName) const;
+  CPDF_Object* LookupValue(const CFX_ByteString& csName) const;
+  CPDF_Array* LookupNamedDest(CPDF_Document* pDoc, const CFX_ByteString& sName);
+
+  int GetIndex(const CFX_ByteString& csName) const;
+  size_t GetCount() const;
+  CPDF_Dictionary* GetRoot() const { return m_pRoot; }
+
+ private:
+  CPDF_Dictionary* m_pRoot;
+};
+
+#endif  // CORE_FPDFDOC_INCLUDE_CPDF_NAMETREE_H_