Move UsbService to its own component.

chrome/chrome_tests_unit.gypi

 # Copyright 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': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 1735 matching lines @@
         'browser/ui/webui/theme_source_unittest.cc',
         'browser/ui/webui/web_dialog_web_contents_delegate_unittest.cc',
         'browser/ui/window_sizer/window_sizer_ash_unittest.cc',
         'browser/ui/window_sizer/window_sizer_common_unittest.cc',
         'browser/ui/window_sizer/window_sizer_unittest.cc',
         'browser/ui/zoom/zoom_controller_unittest.cc',
         'browser/upload_list_unittest.cc',
         'browser/chrome_content_browser_client_unittest.cc',
         'browser/undo/bookmark_undo_service_test.cc',
         'browser/undo/undo_manager_test.cc',
-        'browser/usb/usb_context_unittest.cc',
         'browser/web_applications/web_app_mac_unittest.mm',
         'browser/web_applications/web_app_unittest.cc',
         'browser/web_resource/eula_accepted_notifier_unittest.cc',
         'browser/web_resource/promo_resource_service_mobile_ntp_unittest.cc',
         'browser/web_resource/promo_resource_service_unittest.cc',
         'browser/web_resource/resource_request_allowed_notifier_test_util.cc',
         'browser/web_resource/resource_request_allowed_notifier_test_util.h',
         'browser/web_resource/resource_request_allowed_notifier_unittest.cc',
         'browser/webdata/keyword_table_unittest.cc',
         'browser/webdata/web_apps_table_unittest.cc',
@@ skipping 749 matching lines @@
             # Android.
             'browser/ui/autofill/autofill_popup_controller_unittest.cc',
 
             # Android uses a different invaliator.
             'browser/invalidation/gcm_invalidation_bridge_unittest.cc',
             'browser/invalidation/ticl_invalidation_service_unittest.cc',
 
             # The importer code is not used on Android.
             'common/importer/firefox_importer_utils_unittest.cc',
 
-            # USB service is not supported on Android.
-            'browser/usb/usb_context_unittest.cc',
-
             # Bookmark undo is not used on Android.
            'browser/undo/bookmark_undo_service_test.cc',
            'browser/undo/undo_manager_test.cc',
 
             # URL elider is not used on android.
            'browser/ui/tests/elide_url_unittest.cc',
           ],
           'sources/': [
             ['exclude', '^browser/captive_portal/'],
             ['exclude', '^browser/diagnostics/'],
@@ skipping 293 matching lines @@
             'browser/ui/app_list/test/fake_profile_store.h',
             'browser/ui/app_list/test/fast_show_pickler_unittest.cc',
             'browser/ui/views/app_list/linux/app_list_linux_unittest.cc',
             'browser/ui/views/app_list/win/app_list_win_unittest.cc',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }