Move FileEnumerator to its own file, do some refactoring.

chrome/installer/setup/setup_util.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.
 //
 // This file declares util functions for setup project.
 
 #include "chrome/installer/setup/setup_util.h"
 
 #include <windows.h>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
+#include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/process_util.h"
 #include "base/string_util.h"
 #include "base/version.h"
 #include "base/win/windows_version.h"
 #include "chrome/installer/util/copy_tree_work_item.h"
 #include "chrome/installer/util/installation_state.h"
 #include "chrome/installer/util/installer_state.h"
 #include "chrome/installer/util/master_preferences.h"
@@ skipping 95 matching lines @@
   if (installer_state != NULL)
     installer_state->UpdateStage(installer::BINARY_PATCHING);
 
   return ApplyBinaryPatch(src.value().c_str(), patch.value().c_str(),
                           dest.value().c_str());
 }
 
 Version* GetMaxVersionFromArchiveDir(const base::FilePath& chrome_path) {
   VLOG(1) << "Looking for Chrome version folder under " << chrome_path.value();
   Version* version = NULL;
-  file_util::FileEnumerator version_enum(chrome_path, false,
-      file_util::FileEnumerator::DIRECTORIES);
+  base::FileEnumerator version_enum(chrome_path, false,
+      base::FileEnumerator::DIRECTORIES);
   // TODO(tommi): The version directory really should match the version of
   // setup.exe.  To begin with, we should at least DCHECK that that's true.
 
   scoped_ptr<Version> max_version(new Version("0.0.0.0"));
   bool version_found = false;
 
   while (!version_enum.Next().empty()) {
-    file_util::FileEnumerator::FindInfo find_data = {0};
-    version_enum.GetFindInfo(&find_data);
-    VLOG(1) << "directory found: " << find_data.cFileName;
+    base::FileEnumerator::FileInfo find_data = version_enum.GetInfo();
+    VLOG(1) << "directory found: " << find_data.GetName().value();
 
     scoped_ptr<Version> found_version(
-        new Version(WideToASCII(find_data.cFileName)));
+        new Version(WideToASCII(find_data.GetName().value())));
     if (found_version->IsValid() &&
         found_version->CompareTo(*max_version.get()) > 0) {
       max_version.reset(found_version.release());
       version_found = true;
     }
   }
 
   return (version_found ? max_version.release() : NULL);
 }
 
@@ skipping 209 matching lines @@
 }
 
 ScopedTokenPrivilege::~ScopedTokenPrivilege() {
   if (is_enabled_ && previous_privileges_.PrivilegeCount != 0) {
     ::AdjustTokenPrivileges(token_, FALSE, &previous_privileges_,
                             sizeof(TOKEN_PRIVILEGES), NULL, NULL);
   }
 }
 
 }  // namespace installer