wstring: remove wstring method from PlatformFile

base/platform_file_win.cc

 // Copyright (c) 2006-2008 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 "base/platform_file.h"
 
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/threading/thread_restrictions.h"
 
@@ skipping 86 matching lines @@
           break;
         default:
           *error_code = PLATFORM_FILE_ERROR_FAILED;
       }
     }
   }
 
   return file;
 }
 
-PlatformFile CreatePlatformFile(const std::wstring& name, int flags,
-                                bool* created) {
-  return CreatePlatformFile(FilePath::FromWStringHack(name), flags,
-                            created, NULL);
-}
-
 bool ClosePlatformFile(PlatformFile file) {
   base::ThreadRestrictions::AssertIOAllowed();
   return (CloseHandle(file) != 0);
 }
 
 int ReadPlatformFile(PlatformFile file, int64 offset, char* data, int size) {
   base::ThreadRestrictions::AssertIOAllowed();
   if (file == kInvalidPlatformFileValue)
     return -1;
 
@@ skipping 92 matching lines @@
   info->is_directory =
       file_info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY != 0;
   info->is_symbolic_link = false; // Windows doesn't have symbolic links.
   info->last_modified = base::Time::FromFileTime(file_info.ftLastWriteTime);
   info->last_accessed = base::Time::FromFileTime(file_info.ftLastAccessTime);
   info->creation_time = base::Time::FromFileTime(file_info.ftCreationTime);
   return true;
 }
 
 }  // namespace disk_cache