Convert base::file_util to use File instead of PlatformFile.

chrome/browser/media_galleries/fileapi/iapps_finder_impl_mac.mm

 // Copyright 2013 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 "chrome/browser/media_galleries/fileapi/iapps_finder_impl.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #import "base/mac/foundation_util.h"
@@ skipping 38 matching lines @@
 
   // Find the most recently used database from the list of database paths. Most
   // of the time |plist| has a size of 1.
   base::Time most_recent_db_time;
   base::FilePath most_recent_db_path;
   for (NSString* path_ns in plist.get()) {
     base::FilePath db_path = path_extractor.Run(path_ns);
     if (db_path.empty())
       continue;
 
-    base::PlatformFileInfo file_info;
+    base::File::Info file_info;
     if (!base::GetFileInfo(db_path, &file_info))
       continue;
 
     // In case of two databases with the same modified time, tie breaker goes
     // to the first one on the list.
     if (file_info.last_modified <= most_recent_db_time)
       continue;
 
     most_recent_db_time = file_info.last_modified;
     most_recent_db_path = db_path;
@@ skipping 36 matching lines @@
                  base::scoped_nsobject<NSString>(kITunesRecentDatabasePathsKey),
                  base::Bind(&ExtractITunesPath)),
       callback);
 }
 
 void SetMacPreferencesForTesting(MacPreferences* preferences) {
   g_test_mac_preferences = preferences;
 }
 
 }  // namespace iapps