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

chrome/browser/password_manager/native_backend_kwallet_x_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 <algorithm>
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/pickle.h"
+#include "base/prefs/pref_service.h"
 #include "base/stl_util.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/password_manager/native_backend_kwallet_x.h"
-#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread.h"
 #include "dbus/message.h"
 #include "dbus/mock_bus.h"
 #include "dbus/mock_object_proxy.h"
 #include "dbus/object_path.h"
 #include "dbus/object_proxy.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 1052 matching lines @@
   CheckVersion0Pickle(true, PasswordForm::SCHEME_BASIC);
 }
 
 TEST_F(NativeBackendKWalletPickleTest, ReadsOld64BitHTMLPickles) {
   CheckVersion0Pickle(false, PasswordForm::SCHEME_HTML);
 }
 
 TEST_F(NativeBackendKWalletPickleTest, ReadsOld64BitHTTPPickles) {
   CheckVersion0Pickle(false, PasswordForm::SCHEME_BASIC);
 }