Move some more file utils to the base namespace.

chrome/browser/web_applications/web_app_mac.mm

 // 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.
 
 #import "chrome/browser/web_applications/web_app_mac.h"
 
 #import <Carbon/Carbon.h>
 #import <Cocoa/Cocoa.h>
 
 #include "apps/app_shim/app_shim_mac.h"
@@ skipping 263 matching lines @@
   NSString* strings_path = base::mac::FilePathToNSString(
       localized.Append(locale + ".strings"));
   [strings_dict writeToFile:strings_path
                  atomically:YES];
 }
 
 void DeletePathAndParentIfEmpty(const base::FilePath& app_path) {
   DCHECK(!app_path.empty());
   base::DeleteFile(app_path, true);
   base::FilePath apps_folder = app_path.DirName();
-  if (file_util::IsDirectoryEmpty(apps_folder))
+  if (base::IsDirectoryEmpty(apps_folder))
     base::DeleteFile(apps_folder, false);
 }
 
 bool IsShimForProfile(const base::FilePath& base_name,
                       const std::string& profile_base_name) {
   if (!StartsWithASCII(base_name.value(), profile_base_name, true))
     return false;
 
   if (base_name.Extension() != ".app")
     return false;
@@ skipping 488 matching lines @@
     ShellIntegration::ShortcutInfo shortcut_info =
         BuildShortcutInfoFromBundle(*it);
     WebAppShortcutCreator shortcut_creator(it->DirName(), shortcut_info);
     shortcut_creator.DeleteShortcuts();
   }
 }
 
 }  // namespace internals
 
 }  // namespace web_app