Continue to clean c_str() calls.

components/translate/core/browser/translate_prefs.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/translate/core/browser/translate_prefs.h"
 
 #include <set>
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_piece.h"
@@ skipping 403 matching lines @@
   std::string languages_str = base::JoinString(languages, ",");
   prefs_->SetString(preferred_languages_pref_.c_str(), languages_str);
 #endif
 
   // Save the same language list as accept languages preference as well, but we
   // need to expand the language list, to make it more acceptable. For instance,
   // some web sites don't understand 'en-US' but 'en'. See crosbug.com/9884.
   std::vector<base::StringPiece> accept_languages;
   ExpandLanguageCodes(languages, &accept_languages);
   std::string accept_languages_str = base::JoinString(accept_languages, ",");
-  prefs_->SetString(accept_languages_pref_.c_str(), accept_languages_str);
+  prefs_->SetString(accept_languages_pref_, accept_languages_str);
 }
 
 bool TranslatePrefs::CanTranslateLanguage(
     TranslateAcceptLanguages* accept_languages,
     const std::string& language) {
   bool can_be_accept_language =
       TranslateAcceptLanguages::CanBeAcceptLanguage(language);
   bool is_accept_language = accept_languages->IsAcceptLanguage(language);
 
   // For the translate language experiment, blocklists can be overridden.
@@ skipping 197 matching lines @@
     out_value->push_back(it);
   std::sort(out_value->begin(), out_value->end(),
             [](const LanguageAndProbability& left,
                const LanguageAndProbability& right) {
               return left.second > right.second;
             });
   return confidence;
 }
 
 }  // namespace translate