Cleanup: remove IdentityAccountTracker (replaced by gaia::AccountTracker)

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 905 matching lines @@
         'browser/extensions/api/declarative_webrequest/webrequest_condition_attribute_unittest.cc',
         'browser/extensions/api/declarative_webrequest/webrequest_condition_unittest.cc',
         'browser/extensions/api/declarative_webrequest/webrequest_rules_registry_unittest.cc',
         'browser/extensions/api/dial/dial_device_data_unittest.cc',
         'browser/extensions/api/dial/dial_registry_unittest.cc',
         'browser/extensions/api/dial/dial_service_unittest.cc',
         'browser/extensions/api/enterprise_platform_keys_private/enterprise_platform_keys_private_api_unittest.cc',
         'browser/extensions/api/extension_action/extension_action_prefs_unittest.cc',
         'browser/extensions/api/file_handlers/mime_util_unittest.cc',
         'browser/extensions/api/file_system/file_system_api_unittest.cc',
-        'browser/extensions/api/identity/account_tracker_unittest.cc',
         'browser/extensions/api/identity/extension_token_key_unittest.cc',
         'browser/extensions/api/identity/gaia_web_auth_flow_unittest.cc',
         'browser/extensions/api/identity/identity_mint_queue_unittest.cc',
         'browser/extensions/api/idle/idle_api_unittest.cc',
         'browser/extensions/api/image_writer_private/destroy_partitions_operation_unittest.cc',
         'browser/extensions/api/image_writer_private/operation_manager_unittest.cc',
         'browser/extensions/api/image_writer_private/operation_unittest.cc',
         'browser/extensions/api/image_writer_private/removable_storage_provider_chromeos_unittest.cc',
         'browser/extensions/api/image_writer_private/test_utils.cc',
         'browser/extensions/api/image_writer_private/write_from_file_operation_unittest.cc',
@@ skipping 1987 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }