Move remaining non-test, non-Chrome-specific Prefs code to base/prefs/.

chrome/browser/download/chrome_download_manager_delegate_unittest.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 "base/file_path.h"
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop.h"
 #include "base/observer_list.h"
+#include "base/prefs/pref_service.h"
 #include "base/stl_util.h"
 #include "base/string_util.h"
 #include "base/value_conversions.h"
 #include "chrome/browser/download/chrome_download_manager_delegate.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/download/download_util.h"
-#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/safe_browsing/download_protection_service.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "chrome/test/base/testing_pref_service.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/test/mock_download_item.h"
 #include "content/public/test/mock_download_manager.h"
@@ skipping 887 matching lines @@
   // Run the first test case again. Since the last download path was cleared,
   // this test case should behave identically to the first time it was run.
   RunTestCases(kLastSavePathTestCases, 1);
 }
 
 // TODO(asanka): Add more tests.
 // * Default download path is not writable.
 // * Download path doesn't exist.
 // * IsDangerousFile().
 // * Filename generation.