Update Mac notification tray behavior.

ui/message_center/notification_list_unittest.cc

 // 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.
 
 #include "ui/message_center/notification_list.h"
 
 #include "base/basictypes.h"
 #include "base/i18n/time_formatting.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 588 matching lines @@
   EXPECT_TRUE(nr->is_read());
 }
 
 TEST_F(NotificationListTest, QuietMode) {
   notification_list()->SetQuietMode(true);
   AddNotification();
   AddPriorityNotification(HIGH_PRIORITY);
   AddPriorityNotification(MAX_PRIORITY);
   EXPECT_EQ(3u, notification_list()->NotificationCount());
   EXPECT_EQ(0u, GetPopupCounts());
-  // TODO(mukai): fix here when notification_list distinguish dismiss by quiet
-  // mode and by user operation.
-  EXPECT_EQ(0u, notification_list()->unread_count());
 
   notification_list()->SetQuietMode(false);
   AddNotification();
   EXPECT_EQ(4u, notification_list()->NotificationCount());
   EXPECT_EQ(1u, GetPopupCounts());
 
   // TODO(mukai): Add test of quiet mode with expiration.
 }
 
 }  // namespace test
 }  // namespace message_center