Update chrome for new prefs location.

chrome/browser/chromeos/session_length_limiter_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 "chrome/browser/chromeos/session_length_limiter.h"
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/prefs/testing_pref_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/test/test_mock_time_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/values.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_browser_process.h"
+#include "components/prefs/testing_pref_service.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::Invoke;
 using ::testing::Mock;
 using ::testing::NiceMock;
 
 namespace chromeos {
 
 namespace {
@@ skipping 704 matching lines @@
   runner_->FastForwardBy(base::TimeDelta::FromSeconds(50));
 
   // Remove the session length limit.
   ClearSessionLengthLimitPref();
 
   // Verify that no timer fires to terminate the session.
   runner_->FastForwardUntilNoTasksRemain();
 }
 
 }  // namespace chromeos