Manage HidService lifetime in DeviceClient implementations.

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': [
     {
@@ skipping 100 matching lines @@
           'dependencies': [
             '../testing/android/native_test.gyp:native_test_native_code',
             'device_bluetooth_test_java',
             'device_bluetooth_test_jni_headers',
           ],
           'sources/': [
             ['exclude', '(^|/)hid'],
             ['exclude', '(^|/)serial'],
             ['exclude', '(^|/)usb'],
           ],
-          'sources!': [
-            'test/test_device_client.cc',
-            'test/test_device_client.h',
-          ],
         }],
         ['OS=="mac"', {
           'dependencies': [
             '../third_party/ocmock/ocmock.gyp:ocmock',
           ],
           'link_settings': {
             'libraries': [
               '$(SDKROOT)/System/Library/Frameworks/IOBluetooth.framework',
             ],
           },
@@ skipping 91 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'device_unittests.isolate',
           ]
         }
       ]
     }]
   ],
 }