Add the button style for combobox

chrome/chrome_browser_ui.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': [
     {
       'target_name': 'browser_ui',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 1585 matching lines @@
         'browser/ui/top_level_widget.h',
         'browser/ui/translate/language_combobox_model.cc',
         'browser/ui/translate/language_combobox_model.h',
         'browser/ui/translate/translate_bubble_factory.cc',
         'browser/ui/translate/translate_bubble_factory.h',
         'browser/ui/translate/translate_bubble_model.h',
         'browser/ui/translate/translate_bubble_model_impl.cc',
         'browser/ui/translate/translate_bubble_model_impl.h',
         'browser/ui/translate/translate_bubble_view_state_transition.cc',
         'browser/ui/translate/translate_bubble_view_state_transition.h',
+        'browser/ui/translate/translate_denial_menu_model.cc',
+        'browser/ui/translate/translate_denial_menu_model.h',
+        'browser/ui/translate/translate_denial_menu_model_observer.h',
         'browser/ui/uma_browsing_activity_observer.cc',
         'browser/ui/uma_browsing_activity_observer.h',
         'browser/ui/uninstall_browser_prompt.h',
         'browser/ui/unload_controller.cc',
         'browser/ui/unload_controller.h',
         'browser/ui/user_data_dir_dialog.h',
         'browser/ui/validation_message_bubble.h',
         'browser/ui/view_ids.h',
         'browser/ui/views/accelerator_utils_aura.cc',
         'browser/ui/views/accelerator_utils_views.cc',
@@ skipping 1688 matching lines @@
             'browser/ui/webui/local_discovery/local_discovery_ui.cc',
             'browser/ui/webui/local_discovery/local_discovery_ui.h',
             'browser/ui/webui/local_discovery/local_discovery_ui_handler.cc',
             'browser/ui/webui/local_discovery/local_discovery_ui_handler.h',
           ],
         }],
       ],
     },
   ],
 }