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

remoting/host/policy_hack/policy_watcher_linux.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.
 
 // Most of this code is copied from various classes in
 // src/chrome/browser/policy. In particular, look at
 //
 //   file_based_policy_loader.{h,cc}
 //   config_dir_policy_provider.{h,cc}
 //
@@ skipping 82 matching lines @@
 
     if (!error)
       Reload();
     else
       LOG(ERROR) << "PolicyWatcherLinux on " << path.value() << " failed.";
   }
 
   base::Time GetLastModification() {
     DCHECK(OnPolicyWatcherThread());
     base::Time last_modification = base::Time();
-    base::PlatformFileInfo file_info;
+    base::File::Info file_info;
 
     // If the path does not exist or points to a directory, it's safe to load.
     if (!base::GetFileInfo(config_dir_, &file_info) ||
         !file_info.is_directory) {
       return last_modification;
     }
 
     // Enumerate the files and find the most recent modification timestamp.
     base::FileEnumerator file_enumerator(config_dir_,
                                          false,
@@ skipping 131 matching lines @@
 };
 
 PolicyWatcher* PolicyWatcher::Create(
     scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
   base::FilePath policy_dir(kPolicyDir);
   return new PolicyWatcherLinux(task_runner, policy_dir);
 }
 
 }  // namespace policy_hack
 }  // namespace remoting