Use FilePath::DirName instead of the deprecated file_util::GetDirectoryFromPath.

base/file_util_win.cc

 // Copyright (c) 2010 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/file_util.h"
 
 #include <windows.h>
 #include <propvarutil.h>
 #include <psapi.h>
 #include <shellapi.h>
@@ skipping 59 matching lines @@
   }
 
   // No drive matched.  The path does not start with a device junction
   // that is mounted as a drive letter.  This means there is no drive
   // letter path to the volume that holds |device_path|, so fail.
   return false;
 }
 
 }  // namespace
 
-std::wstring GetDirectoryFromPath(const std::wstring& path) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  wchar_t path_buffer[MAX_PATH];
-  wchar_t* file_ptr = NULL;
-  if (GetFullPathName(path.c_str(), MAX_PATH, path_buffer, &file_ptr) == 0)
-    return L"";
-
-  std::wstring::size_type length =
-      file_ptr ? file_ptr - path_buffer : path.length();
-  std::wstring directory(path, 0, length);
-  return FilePath(directory).StripTrailingSeparators().value();
-}
-
 bool AbsolutePath(FilePath* path) {
   base::ThreadRestrictions::AssertIOAllowed();
   wchar_t file_path_buf[MAX_PATH];
   if (!_wfullpath(file_path_buf, path->value().c_str(), MAX_PATH))
     return false;
   *path = FilePath(file_path_buf);
   return true;
 }
 
 int CountFilesCreatedAfter(const FilePath& path,
@@ skipping 1028 matching lines @@
       uint8 unused = *(touch + offset);
       offset += step_size;
     }
     FreeLibrary(dll_module);
   }
 
   return true;
 }
 
 }  // namespace file_util