Cleanup: Remove unneeded chrome/common/pref_names.h includes.

chrome/browser/chromeos/system/input_device_settings.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/system/input_device_settings.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "base/process/kill.h"
 #include "base/process/launch.h"
 #include "base/process/process_handle.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/sys_info.h"
 #include "base/task_runner.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
 #include "chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.h"
-#include "chrome/common/pref_names.h"
 #include "chromeos/system/statistics_provider.h"
 #include "content/public/browser/browser_thread.h"
 
 namespace chromeos {
 namespace system {
 
 namespace {
 
 InputDeviceSettings* g_instance_;
 InputDeviceSettings* g_test_instance_;
@@ skipping 389 matching lines @@
 void InputDeviceSettings::SetSettingsForTesting(
     InputDeviceSettings* test_settings) {
   if (g_test_instance_ == test_settings)
     return;
   delete g_test_instance_;
   g_test_instance_ = test_settings;
 }
 
 }  // namespace system
 }  // namespace chromeos