XXX test gn format everything

ui/message_center/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 
 component("message_center") {
   deps = [
     "//base",
@@ skipping 110 matching lines @@
     }
 
     if (use_ash) {
       sources += [
         "views/message_bubble_base.cc",
         "views/message_bubble_base.h",
         "views/message_center_bubble.cc",
         "views/message_center_bubble.h",
       ]
     }
-
   } else {
     # Notification service disabled.
     sources = [
       "dummy_message_center.cc",
       "notification_delegate.cc",
       "notification_delegate.h",
     ]
+
     # Android implements its own notification UI manager instead of deferring to
     # the message center (when notifications are enabled). Include a minimal
     # set of files required for notifications on Android.
     if (is_android) {
       sources += [
         "notification.cc",
         "notification.h",
         "notifier_settings.cc",
         "notifier_settings.h",
       ]
@@ skipping 78 matching lines @@
       deps += [
         # Compositor is needed by message_center_view_unittest.cc and for the
         # fonts used by bounded_label_unittest.cc.
         "//ui/compositor",
         "//ui/views",
         "//ui/views:test_support",
       ]
     }
   }  # enable_notifications && !is_android
 }