Build key map DomCodeToKey() for Windows

ui/events/events_unittests.gyp

Index: ui/events/events_unittests.gyp
diff --git a/ui/events/events_unittests.gyp b/ui/events/events_unittests.gyp
index e2979669a986a6bffcf2ff92bbb68bbccf8ccc14..69492b9ca8678c11d65e83f83df80f44d47cf426 100644
--- a/ui/events/events_unittests.gyp
+++ b/ui/events/events_unittests.gyp
@@ -57,6 +57,7 @@
         'ipc/latency_info_param_traits_unittest.cc',
         'keycodes/dom/keycode_converter_unittest.cc',
         'keycodes/keyboard_code_conversion_unittest.cc',
+        'keycodes/keyboard_lookup_win_unittest.cc',
         'latency_info_unittest.cc',
         'platform/platform_event_source_unittest.cc',
         'scoped_target_handler_unittest.cc',
@@ -194,4 +195,4 @@
       ],
     }],
   ],
-}
+}