Remove redundant c_str() calls.

base/i18n/file_util_icu.cc

 // Copyright (c) 2012 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.
 
 // File utilities that use the ICU library go in this file.
 
 #include "base/i18n/file_util_icu.h"
 
 #include <stdint.h>
 
@@ skipping 146 matching lines @@
   collator->setStrength(icu::Collator::TERTIARY);
 
 #if defined(OS_WIN)
   return CompareString16WithCollator(*collator, WideToUTF16(a.value()),
                                      WideToUTF16(b.value())) == UCOL_LESS;
 
 #elif defined(OS_POSIX)
   // On linux, the file system encoding is not defined. We assume
   // SysNativeMBToWide takes care of it.
   return CompareString16WithCollator(
-             *collator, WideToUTF16(SysNativeMBToWide(a.value().c_str())),
-             WideToUTF16(SysNativeMBToWide(b.value().c_str()))) == UCOL_LESS;
+             *collator, WideToUTF16(SysNativeMBToWide(a.value())),
+             WideToUTF16(SysNativeMBToWide(b.value()))) == UCOL_LESS;
 #else
   #error Not implemented on your system
 #endif
 }
 
 void NormalizeFileNameEncoding(FilePath* file_name) {
 #if defined(OS_CHROMEOS)
   std::string normalized_str;
   if (ConvertToUtf8AndNormalize(file_name->BaseName().value(),
                                 kCodepageUTF8,
                                 &normalized_str)) {
     *file_name = file_name->DirName().Append(FilePath(normalized_str));
   }
 #endif
 }
 
 }  // namespace i18n
 }  // namespace base