[Eraser] First pass at removing the notification center panel.

ui/message_center/message_center.gyp

 # Copyright (c) 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': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 19 matching lines @@
       'sources': [
         # Note: file list duplicated in GN build.
         'cocoa/notification_controller.h',
         'cocoa/notification_controller.mm',
         'cocoa/opaque_views.h',
         'cocoa/opaque_views.mm',
         'cocoa/popup_collection.h',
         'cocoa/popup_collection.mm',
         'cocoa/popup_controller.h',
         'cocoa/popup_controller.mm',
-        'cocoa/settings_controller.h',
-        'cocoa/settings_controller.mm',
-        'cocoa/settings_entry_view.h',
-        'cocoa/settings_entry_view.mm',
-        'cocoa/status_item_view.h',
-        'cocoa/status_item_view.mm',
-        'cocoa/tray_controller.h',
-        'cocoa/tray_controller.mm',
-        'cocoa/tray_view_controller.h',
-        'cocoa/tray_view_controller.mm',
         'dummy_message_center.cc',
         'message_center.cc',
         'message_center.h',
         'message_center_export.h',
         'message_center_impl.cc',
         'message_center_impl.h',
         'message_center_observer.h',
         'message_center_style.cc',
         'message_center_style.h',
         'message_center_switches.cc',
@@ skipping 143 matching lines @@
         '../resources/ui_resources.gyp:ui_resources',
         '../resources/ui_resources.gyp:ui_test_pak',
         'message_center',
         'message_center_test_support',
       ],
       'sources': [
         # Note: file list duplicated in GN build.
         'cocoa/notification_controller_unittest.mm',
         'cocoa/popup_collection_unittest.mm',
         'cocoa/popup_controller_unittest.mm',
-        'cocoa/settings_controller_unittest.mm',
-        'cocoa/status_item_view_unittest.mm',
-        'cocoa/tray_controller_unittest.mm',
-        'cocoa/tray_view_controller_unittest.mm',
         'message_center_impl_unittest.cc',
         'message_center_tray_unittest.cc',
         'notification_delegate_unittest.cc',
         'notification_list_unittest.cc',
         'test/run_all_unittests.cc',
       ],
       'conditions': [
         ['OS=="mac"', {
           'dependencies': [
             '../gfx/gfx.gyp:gfx_test_support',
@@ skipping 51 matching lines @@
               'dependencies': [
                 '../../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }