Move browser-agnostic code from file_system_util to file_system_core_util.

chrome/browser/download/download_dir_policy_handler.cc

 // 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/download/download_dir_policy_handler.h"
 
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_value_map.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/drive/drive_pref_names.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/policy/policy_path_parser.h"
 #include "chrome/common/pref_names.h"
 #include "components/policy/core/browser/configuration_policy_handler_parameters.h"
 #include "components/policy/core/browser/policy_error_map.h"
 #include "components/policy/core/common/policy_map.h"
 #include "components/policy/core/common/policy_types.h"
 #include "grit/components_strings.h"
 #include "policy/policy_constants.h"
 
 #if defined(OS_CHROMEOS)
-#include "chrome/browser/chromeos/drive/file_system_util.h"
+#include "chrome/browser/chromeos/drive/file_system_core_util.h"
 #endif
 
 namespace {
 #if defined(OS_CHROMEOS)
 const char* kDriveNamePolicyVariableName = "${google_drive}";
 
 // Drive root folder relative to its mount point.
 const base::FilePath::CharType* kRootRelativeToDriveMount =
     FILE_PATH_LITERAL("root");
 #endif
@@ skipping 80 matching lines @@
     }
 #endif
   }
 }
 
 void DownloadDirPolicyHandler::ApplyPolicySettings(
     const policy::PolicyMap& /* policies */,
     PrefValueMap* /* prefs */) {
   NOTREACHED();
 }