Add a basic Mojo SerialService that implements GetDevices().

device/device_tests.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
       'target_name': 'device_unittests',
       'type': '<(gtest_target_type)',
       'dependencies': [
-        '../base/base.gyp:run_all_unittests',
         '../base/base.gyp:test_support_base',
+        '../mojo/mojo.gyp:mojo_environment_chromium',
+        '../mojo/mojo.gyp:mojo_system_impl',
         '../testing/gmock.gyp:gmock',
         '../testing/gtest.gyp:gtest',
         'bluetooth/bluetooth.gyp:device_bluetooth',
         'bluetooth/bluetooth.gyp:device_bluetooth_mocks',
         'nfc/nfc.gyp:device_nfc',
         'usb/usb.gyp:device_usb',
         'hid/hid.gyp:device_hid',
+        'serial/serial.gyp:device_serial',
       ],
       'sources': [
         'bluetooth/bluetooth_adapter_mac_unittest.mm',
         'bluetooth/bluetooth_adapter_unittest.cc',
         'bluetooth/bluetooth_adapter_win_unittest.cc',
         'bluetooth/bluetooth_device_unittest.cc',
         'bluetooth/bluetooth_device_win_unittest.cc',
         'bluetooth/bluetooth_chromeos_unittest.cc',
         'bluetooth/bluetooth_gatt_chromeos_unittest.cc',
         'bluetooth/bluetooth_low_energy_win_unittest.cc',
         'bluetooth/bluetooth_service_record_win_unittest.cc',
         'bluetooth/bluetooth_socket_chromeos_unittest.cc',
         'bluetooth/bluetooth_task_manager_win_unittest.cc',
         'bluetooth/bluetooth_uuid_unittest.cc',
         'nfc/nfc_chromeos_unittest.cc',
         'nfc/nfc_ndef_record_unittest.cc',
         'usb/usb_ids_unittest.cc',
         'hid/hid_connection_unittest.cc',
         'hid/hid_report_descriptor_unittest.cc',
         'hid/hid_service_unittest.cc',
         'hid/input_service_linux_unittest.cc',
+        'serial/serial_service_unittest.cc',
+        'test/run_all_unittests.cc',
       ],
       'conditions': [
         ['chromeos==1', {
           'dependencies': [
             '../build/linux/system.gyp:dbus',
             '../chromeos/chromeos.gyp:chromeos_test_support',
             '../chromeos/chromeos.gyp:chromeos_test_support_without_gmock',
             '../dbus/dbus.gyp:dbus',
           ]
         }],
@@ skipping 20 matching lines @@
             'hid/hid.gyp:device_hid',
           ],
           'sources/': [
             ['exclude', '^hid/'],
           ],
         }],
       ],
     },
   ],
 }