Lazy-creates BluetoothAdapter in ExtensionBluetoothEventRouter (EBEE).

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index 23e31337327a7d6ac3bb34c9be652e9c244ad6fa..172de6c94d21c61b5c05db39b7272d05765fbfab 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -1050,6 +1050,7 @@
         '../sync/sync.gyp:test_support_syncapi_service',
         'test_support_unit',
         # 3) anything tests directly depend on
+        '../device/device.gyp:device_bluetooth_mocks',
         '../google_apis/google_apis.gyp:google_apis',
         '../skia/skia.gyp:skia',
         '../third_party/bzip2/bzip2.gyp:bzip2',
@@ -1358,6 +1359,7 @@
         'browser/extensions/app_notification_test_util.cc',
         'browser/extensions/app_notify_channel_setup_unittest.cc',
         'browser/extensions/app_sync_data_unittest.cc',
+        'browser/extensions/bluetooth_event_router_unittest.cc',
         'browser/extensions/component_loader_unittest.cc',
         'browser/extensions/convert_user_script_unittest.cc',
         'browser/extensions/convert_web_app_unittest.cc',
@@ -2323,6 +2325,7 @@
           'sources/': [
             ['exclude', '^browser/extensions/api/'],
             ['exclude', '^browser/sync/glue/chrome_extensions_activity_monitor_unittest.cc'],
+            ['exclude', '^browser/extensions/bluetooth_event_router_unittest.cc'],
           ],
         }],
         ['use_ash==1', {