Make down-conversion explicit from CFX_ByteString to CFX_ByteStringC.

core/fpdfdoc/doc_ocg.cpp

 // 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
 
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
 #include "core/include/fpdfdoc/fpdf_doc.h"
 
@@ skipping 124 matching lines @@
       if (!pOCGs) {
         continue;
       }
       if (FPDFDOC_OCG_FindGroup(pOCGs, pOCGDict) < 0) {
         continue;
       }
       CPDF_Dictionary* pState = pUsage->GetDictBy(csConfig);
       if (!pState) {
         continue;
       }
-      bState = pState->GetStringBy(csFind) != "OFF";
+      bState = pState->GetStringBy(csFind.AsByteStringC()) != "OFF";
     }
   }
   return bState;
 }
 FX_BOOL CPDF_OCContext::LoadOCGState(const CPDF_Dictionary* pOCGDict) const {
   if (!FPDFDOC_OCG_HasIntent(pOCGDict, "View", "View")) {
     return TRUE;
   }
   CFX_ByteString csState = FPDFDOC_OCG_GetUsageTypeString(m_eUsageType);
   CPDF_Dictionary* pUsage = pOCGDict->GetDictBy("Usage");
   if (pUsage) {
-    CPDF_Dictionary* pState = pUsage->GetDictBy(csState);
+    CPDF_Dictionary* pState = pUsage->GetDictBy(csState.AsByteStringC());
     if (pState) {
       CFX_ByteString csFind = csState + "State";
-      if (pState->KeyExist(csFind)) {
-        return pState->GetStringBy(csFind) != "OFF";
+      if (pState->KeyExist(csFind.AsByteStringC())) {
+        return pState->GetStringBy(csFind.AsByteStringC()) != "OFF";
       }
     }
     if (csState != "View") {
       pState = pUsage->GetDictBy("View");
       if (pState && pState->KeyExist("ViewState")) {
         return pState->GetStringBy("ViewState") != "OFF";
       }
     }
   }
   FX_BOOL bDefValid = FALSE;
-  return LoadOCGStateFromConfig(csState, pOCGDict, bDefValid);
+  return LoadOCGStateFromConfig(csState.AsByteStringC(), pOCGDict, bDefValid);
 }
 
 FX_BOOL CPDF_OCContext::GetOCGVisible(const CPDF_Dictionary* pOCGDict) {
   if (!pOCGDict)
     return FALSE;
 
   const auto it = m_OCGStates.find(pOCGDict);
   if (it != m_OCGStates.end())
     return it->second;
 
@@ skipping 92 matching lines @@
   }
   CFX_ByteString csType = pOCGDict->GetStringBy("Type", "OCG");
   if (csType == "OCG") {
     return GetOCGVisible(pOCGDict);
   }
   return LoadOCMDState(pOCGDict, FALSE);
 }
 void CPDF_OCContext::ResetOCContext() {
   m_OCGStates.clear();
 }