Move browser-agnostic code from file_system_util to file_system_core_util.

chrome/browser/download/download_dir_policy_handler_unittest.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 <string>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/drive/drive_pref_names.h"
 #include "chrome/browser/download/download_dir_policy_handler.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/common/pref_names.h"
 #include "components/policy/core/browser/configuration_policy_handler_parameters.h"
 #include "components/policy/core/browser/configuration_policy_pref_store.h"
 #include "components/policy/core/browser/configuration_policy_pref_store_test.h"
 #include "components/policy/core/common/policy_details.h"
 #include "components/policy/core/common/policy_map.h"
 #include "components/policy/core/common/policy_types.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 {
 
 const char* kUserIDHash = "deadbeef";
 
 #if defined(OS_CHROMEOS)
 const char* kDriveNamePolicyVariableName = "${google_drive}";
 const base::FilePath::CharType* kRootRelativeToDriveMount =
     FILE_PATH_LITERAL("root");
@@ skipping 120 matching lines @@
   EXPECT_FALSE(recommended_store_->GetValue(prefs::kPromptForDownload, NULL));
   EXPECT_FALSE(recommended_store_->GetValue(drive::prefs::kDisableDrive, NULL));
 
   EXPECT_TRUE(
       recommended_store_->GetValue(prefs::kDownloadDefaultDirectory, &value));
   EXPECT_TRUE(value);
   EXPECT_TRUE(value->GetAsString(&download_directory));
   EXPECT_EQ(kUserIDHash, download_directory);
 }
 #endif