Gamepad: don't notify about connected pads twice

content/content_tests.gypi

 # Copyright (c) 2013 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': 'layouttest_support_content',
       'type': 'static_library',
       'conditions': [
@@ skipping 453 matching lines @@
         'browser/fileapi/timed_task_helper_unittest.cc',
         'browser/fileapi/transient_file_util_unittest.cc',
         'browser/fileapi/upload_file_system_file_element_reader_unittest.cc',
         'browser/frame_host/frame_tree_unittest.cc',
         'browser/frame_host/navigation_controller_impl_unittest.cc',
         'browser/frame_host/navigation_entry_impl_unittest.cc',
         'browser/frame_host/render_frame_host_manager_unittest.cc',
         'browser/frame_host/render_widget_host_view_child_frame_unittest.cc',
         'browser/frame_host/render_widget_host_view_guest_unittest.cc',
         'browser/gamepad/gamepad_provider_unittest.cc',
+        'browser/gamepad/gamepad_service_unittest.cc',
         'browser/gamepad/gamepad_test_helpers.cc',
         'browser/gamepad/gamepad_test_helpers.h',
         'browser/geolocation/geolocation_provider_unittest.cc',
         'browser/geolocation/location_arbitrator_impl_unittest.cc',
         'browser/geolocation/network_location_provider_unittest.cc',
         'browser/geolocation/wifi_data_provider_chromeos_unittest.cc',
         'browser/geolocation/wifi_data_provider_common_unittest.cc',
         'browser/geolocation/wifi_data_provider_linux_unittest.cc',
         'browser/geolocation/wifi_data_provider_unittest_win.cc',
         'browser/gpu/gpu_data_manager_impl_private_unittest.cc',
@@ skipping 1351 matching lines @@
                   'files': ['<(PRODUCT_DIR)/libnpapi_test_plugin.so'],
                 },
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }