Make CFX_ByteString(const CFX_ByteStringC&) explicit.

core/fpdfdoc/include/fpdf_doc.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 CORE_FPDFDOC_INCLUDE_FPDF_DOC_H_
 #define CORE_FPDFDOC_INCLUDE_FPDF_DOC_H_
 
 #include <map>
@@ skipping 116 matching lines @@
 
   FX_BOOL CheckOCGVisible(const CPDF_Dictionary* pOCGDict);
   FX_BOOL CheckObjectVisible(const CPDF_PageObject* pObj);
 
   CPDF_Document* GetDocument() const { return m_pDocument; }
   UsageType GetUsageType() const { return m_eUsageType; }
 
   void ResetOCContext();
 
  protected:
-  FX_BOOL LoadOCGStateFromConfig(const CFX_ByteStringC& csConfig,
+  FX_BOOL LoadOCGStateFromConfig(const CFX_ByteString& csConfig,
                                  const CPDF_Dictionary* pOCGDict,
                                  FX_BOOL& bValidConfig) const;
   FX_BOOL LoadOCGState(const CPDF_Dictionary* pOCGDict) const;
   FX_BOOL GetOCGVisible(const CPDF_Dictionary* pOCGDict);
   FX_BOOL GetOCGVE(CPDF_Array* pExpression,
                    FX_BOOL bFromConfig,
                    int nLevel = 0);
   FX_BOOL LoadOCMDState(const CPDF_Dictionary* pOCMDDict, FX_BOOL bFromConfig);
 
   CPDF_Document* m_pDocument;
@@ skipping 867 matching lines @@
                         FX_FLOAT fc[4],
                         const CFX_ByteString& csEntry) const;
 
   CFX_WideString GetCaption(const CFX_ByteString& csEntry) const;
   CPDF_Stream* GetIcon(const CFX_ByteString& csEntry) const;
 
   CPDF_Dictionary* const m_pDict;
 };
 
 #endif  // CORE_FPDFDOC_INCLUDE_FPDF_DOC_H_