Move ash/system/web_notification message_center to ui/

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': [
     {
-      'target_name': 'oak',
+      'target_name': 'message_center',
       'type': '<(component)',
       'dependencies': [
         '../../base/base.gyp:base',
-        '../../base/base.gyp:base_i18n',
-        '../../build/temp_gyp/googleurl.gyp:googleurl',
         '../../skia/skia.gyp:skia',
-        '../aura/aura.gyp:aura',
+        '../base/strings/ui_strings.gyp:ui_strings',
         '../compositor/compositor.gyp:compositor',
         '../ui.gyp:ui',
         '../ui.gyp:ui_resources',
         '../views/views.gyp:views',
       ],
       'defines': [
-        'OAK_IMPLEMENTATION',
+        'MESSAGE_CENTER_IMPLEMENTATION',
       ],
       'sources': [
-        # All .cc, .h under oak, except unittests
-        'oak.h',
-        'oak_aura_window_display.cc',
-        'oak_aura_window_display.h',
-        'oak_export.h',
-        'oak_pretty_print.cc',
-        'oak_pretty_print.h',
-        'oak_tree_model.cc',
-        'oak_tree_model.h',
-        'oak_window.cc',
-        'oak_window.h',
-        'oak_details_model.h',
+        'message_bubble_base.cc',
+        'message_bubble_base.h',
+        'message_center.cc',
+        'message_center.h',
+        'message_center_bubble.cc',
+        'message_center_bubble.h',
+        'message_center_export.h',
+        'message_popup_bubble.cc',
+        'message_popup_bubble.h',
+        'message_view.cc',
+        'message_view.h',
+        'notification_list.cc',
+        'notification_list.h',
       ],
     },
   ],
 }