Move PathExists to base namespace.

chrome/browser/chromeos/policy/app_pack_updater.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.
 
 #include "chrome/browser/chromeos/policy/app_pack_updater.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
@@ skipping 460 matching lines @@
     LOG(ERROR) << "AppPack downloaded extension " << id << " but got bad "
                << "version: " << version;
     base::Delete(path, true /* recursive */);
     return;
   }
 
   std::string basename = id + "-" + version + kCRXFileExtension;
   base::FilePath cache_dir(kAppPackCacheDir);
   base::FilePath cached_crx_path = cache_dir.Append(basename);
 
-  if (file_util::PathExists(cached_crx_path)) {
+  if (base::PathExists(cached_crx_path)) {
     LOG(WARNING) << "AppPack downloaded a crx whose filename will overwrite "
                  << "an existing cached crx.";
     base::Delete(cached_crx_path, true /* recursive */);
   }
 
   if (!file_util::DirectoryExists(cache_dir)) {
     LOG(ERROR) << "AppPack cache directory does not exist, creating now: "
                << cache_dir.value();
     if (!file_util::CreateDirectory(cache_dir)) {
       LOG(ERROR) << "Failed to create the AppPack cache dir!";
@@ skipping 66 matching lines @@
 void AppPackUpdater::SetScreenSaverPath(const base::FilePath& path) {
   // Don't invoke the callback if the path isn't changing.
   if (path != screen_saver_path_) {
     screen_saver_path_ = path;
     if (!screen_saver_update_callback_.is_null())
       screen_saver_update_callback_.Run(screen_saver_path_);
   }
 }
 
 }  // namespace policy