Get use_aura=1 and use_aura=1 use_ash=1 building on linux

chrome/browser/notifications/message_center_notification_manager.cc

Index: chrome/browser/notifications/message_center_notification_manager.cc
diff --git a/chrome/browser/notifications/message_center_notification_manager.cc b/chrome/browser/notifications/message_center_notification_manager.cc
index 1905b829908e0a65d5853a9f37141bd043d80ef1..01ffa5a8429b6ea9db78e39e01d4155e4e49a9d5 100644
--- a/chrome/browser/notifications/message_center_notification_manager.cc
+++ b/chrome/browser/notifications/message_center_notification_manager.cc
@@ -29,9 +29,9 @@ MessageCenterNotificationManager::MessageCenterNotificationManager(
   message_center_->SetDelegate(this);
   message_center_->AddObserver(this);
 
-#if !defined(OS_CHROMEOS)
-  // On Windows, the notification manager owns the tray icon and views.  Other
-  // platforms have global ownership and Create will return NULL.
+#if defined(OS_WIN) || defined(OS_MACOSX)
+  // On Windows and Mac, the notification manager owns the tray icon and views.
+  // Other platforms have global ownership and Create will return NULL.
   tray_.reset(message_center::CreateMessageCenterTray());
 #endif
 }