Revert "Fix incorrect CPDFSDK_PageView::CountAnnots()."

fpdfsdk/include/fsdk_mgr.h

 // Copyright 2014 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 FPDFSDK_INCLUDE_FSDK_MGR_H_
 #define FPDFSDK_INCLUDE_FSDK_MGR_H_
 
 #include <map>
@@ skipping 290 matching lines @@
   }
   FX_BOOL KillFocusAnnot(FX_UINT nFlag = 0) {
     return m_pSDKDoc->KillFocusAnnot(nFlag);
   }
   FX_BOOL Annot_HasAppearance(CPDF_Annot* pAnnot);
 
   CPDFSDK_Annot* AddAnnot(CPDF_Dictionary* pDict);
   CPDFSDK_Annot* AddAnnot(const FX_CHAR* lpSubType, CPDF_Dictionary* pDict);
   CPDFSDK_Annot* AddAnnot(CPDF_Annot* pPDFAnnot);
   FX_BOOL DeleteAnnot(CPDFSDK_Annot* pAnnot);
-  size_t CountAnnots() const;
+  int CountAnnots() const;
   CPDFSDK_Annot* GetAnnot(size_t nIndex);
   CPDFSDK_Annot* GetAnnotByDict(CPDF_Dictionary* pDict);
   CPDF_Page* GetPDFPage() { return m_page; }
   CPDF_Document* GetPDFDocument();
   CPDFSDK_Document* GetSDKDocument() { return m_pSDKDoc; }
   FX_BOOL OnLButtonDown(const CPDF_Point& point, FX_UINT nFlag);
   FX_BOOL OnLButtonUp(const CPDF_Point& point, FX_UINT nFlag);
   FX_BOOL OnChar(int nChar, FX_UINT nFlag);
   FX_BOOL OnKeyDown(int nKeyCode, int nFlag);
   FX_BOOL OnKeyUp(int nKeyCode, int nFlag);
@@ skipping 104 matching lines @@
     }
 
     if (nStartPos < m)
       QuickSort(nStartPos, m, bAscend, pCompare);
     if (nStopPos > m)
       QuickSort(m, nStopPos, bAscend, pCompare);
   }
 };
 
 #endif  // FPDFSDK_INCLUDE_FSDK_MGR_H_