Cleanup: Remove unused GetTopLevelWidgetForBrowser() function.

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.
 
 {
   'variables': {
     'chrome_browser_ui_non_ios_sources': [
       'browser/ui/accelerator_utils.h',
       'browser/ui/android/android_about_app_info.cc',
       'browser/ui/android/android_about_app_info.h',
@@ skipping 858 matching lines @@
       'browser/ui/tab_helpers.h',
       'browser/ui/tab_modal_confirm_dialog.h',
       'browser/ui/tabs/tab_utils.cc',
       'browser/ui/tabs/tab_utils.h',
       'browser/ui/toolbar/toolbar_model.cc',
       'browser/ui/toolbar/toolbar_model.h',
       'browser/ui/toolbar/toolbar_model_delegate.h',
       'browser/ui/toolbar/toolbar_model_impl.cc',
       'browser/ui/toolbar/toolbar_model_impl.h',
       'browser/ui/toolbar/toolbar_model_security_level_list.h',
-      '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/uninstall_browser_prompt.h',
@@ skipping 1361 matching lines @@
       'browser/ui/views/toolbar/reload_button.h',
       'browser/ui/views/toolbar/toolbar_button.cc',
       'browser/ui/views/toolbar/toolbar_button.h',
       'browser/ui/views/toolbar/toolbar_view.cc',
       'browser/ui/views/toolbar/toolbar_view.h',
       'browser/ui/views/toolbar/wrench_menu.cc',
       'browser/ui/views/toolbar/wrench_menu.h',
       'browser/ui/views/toolbar/wrench_menu_observer.h',
       'browser/ui/views/toolbar/wrench_toolbar_button.cc',
       'browser/ui/views/toolbar/wrench_toolbar_button.h',
-      'browser/ui/views/top_level_widget_views.cc',
       'browser/ui/views/touch_uma/touch_uma.h',
       'browser/ui/views/translate/translate_bubble_view.cc',
       'browser/ui/views/translate/translate_bubble_view.h',
       'browser/ui/views/update_recommended_message_box.cc',
       'browser/ui/views/update_recommended_message_box.h',
       'browser/ui/views/validation_message_bubble_delegate.cc',
       'browser/ui/views/validation_message_bubble_delegate.h',
       'browser/ui/views/validation_message_bubble_view.cc',
       'browser/ui/views/web_contents_modal_dialog_manager_views.cc',
       'browser/ui/views/website_settings/permissions_bubble_view.cc',
@@ skipping 669 matching lines @@
         }],
         ['enable_spellcheck==1', {
           'dependencies': [
             '../third_party/hunspell/hunspell.gyp:hunspell',
           ],
         }],
       ],
     },
   ],
 }