Remove IPDF_TextPage, IPDF_TextPageFind and IPDF_LinkExtract interfaces.

core/fpdftext/include/cpdf_textpagefind.h

Index: core/fpdftext/include/cpdf_textpagefind.h
diff --git a/core/fpdftext/include/cpdf_textpagefind.h b/core/fpdftext/include/cpdf_textpagefind.h
new file mode 100644
index 0000000000000000000000000000000000000000..ec739e489690a463d8e419e72eeea6d7461b3f6a
--- /dev/null
+++ b/core/fpdftext/include/cpdf_textpagefind.h
@@ -0,0 +1,65 @@
+// 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_FPDFTEXT_INCLUDE_CPDF_TEXTPAGEFIND_H_
+#define CORE_FPDFTEXT_INCLUDE_CPDF_TEXTPAGEFIND_H_
+
+#include <vector>
+
+#include "core/fxcrt/include/fx_coordinates.h"
+#include "core/fxcrt/include/fx_string.h"
+#include "core/fxcrt/include/fx_system.h"
+
+class CPDF_TextPage;
+
+class CPDF_TextPageFind {
+ public:
+  explicit CPDF_TextPageFind(const CPDF_TextPage* pTextPage);
+  ~CPDF_TextPageFind() {}
+
+  FX_BOOL FindFirst(const CFX_WideString& findwhat,
+                    int flags,
+                    int startPos = 0);
+  FX_BOOL FindNext();
+  FX_BOOL FindPrev();
+  void GetRectArray(CFX_RectArray& rects) const;
+  int GetCurOrder() const;
+  int GetMatchedCount() const;
+
+ protected:
+  void ExtractFindWhat(const CFX_WideString& findwhat);
+  FX_BOOL IsMatchWholeWord(const CFX_WideString& csPageText,
+                           int startPos,
+                           int endPos);
+  FX_BOOL ExtractSubString(CFX_WideString& rString,
+                           const FX_WCHAR* lpszFullString,
+                           int iSubString,
+                           FX_WCHAR chSep);
+  CFX_WideString MakeReverse(const CFX_WideString& str);
+  int ReverseFind(const CFX_WideString& csPageText,
+                  const CFX_WideString& csWord,
+                  int nStartPos,
+                  int& WordLength);
+  int GetCharIndex(int index) const;
+
+ private:
+  std::vector<uint16_t> m_CharIndex;
+  const CPDF_TextPage* m_pTextPage;
+  CFX_WideString m_strText;
+  CFX_WideString m_findWhat;
+  int m_flags;
+  std::vector<CFX_WideString> m_csFindWhatArray;
+  int m_findNextStart;
+  int m_findPreStart;
+  FX_BOOL m_bMatchCase;
+  FX_BOOL m_bMatchWholeWord;
+  int m_resStart;
+  int m_resEnd;
+  CFX_RectArray m_resArray;
+  FX_BOOL m_IsFind;
+};
+
+#endif  // CORE_FPDFTEXT_INCLUDE_CPDF_TEXTPAGEFIND_H_