Move IsRunningOnChromeOS to base/chromeos

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 851 matching lines @@
         'browser/chromeos/status/volume_menu_button.cc',
         'browser/chromeos/status/volume_menu_button.h',
         'browser/chromeos/stub_cros_settings_provider.cc',
         'browser/chromeos/stub_cros_settings_provider.h',
         'browser/chromeos/system/ash_system_tray_delegate.cc',
         'browser/chromeos/system/ash_system_tray_delegate.h',
         'browser/chromeos/system/input_device_settings.cc',
         'browser/chromeos/system/input_device_settings.h',
         'browser/chromeos/system/name_value_pairs_parser.cc',
         'browser/chromeos/system/name_value_pairs_parser.h',
-        'browser/chromeos/system/runtime_environment.cc',
-        'browser/chromeos/system/runtime_environment.h',
         'browser/chromeos/system/screen_locker_settings.cc',
         'browser/chromeos/system/screen_locker_settings.h',
         'browser/chromeos/system/statistics_provider.cc',
         'browser/chromeos/system/statistics_provider.h',
         'browser/chromeos/system/syslogs_provider.cc',
         'browser/chromeos/system/syslogs_provider.h',
         'browser/chromeos/system/timezone_settings.cc',
         'browser/chromeos/system/timezone_settings.h',
         'browser/chromeos/system/udev_info_provider.cc',
         'browser/chromeos/system/udev_info_provider.h',
@@ skipping 4497 matching lines @@
          'variables': {
           'proto_in_dir': '../third_party/cros_system_api/dbus/',
           'proto_out_dir': 'chrome/browser/chromeos/dbus',
          },
          'includes': ['../build/protoc.gypi'],
         }],
       ],
     },
   ],
 }