[Win] Only show bell tray icon after a notification.

chrome/browser/ui/views/message_center/web_notification_tray.cc

 // Copyright 2013 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 "chrome/browser/ui/views/message_center/web_notification_tray.h"
 
 #include "base/i18n/number_formatting.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 114 matching lines @@
   return new WebNotificationTray();
 }
 
 WebNotificationTray::WebNotificationTray()
     : message_center_delegate_(NULL),
       status_icon_(NULL),
       message_center_visible_(false),
       should_update_tray_content_(true) {
   message_center_tray_.reset(
       new MessageCenterTray(this, g_browser_process->message_center()));
-  OnMessageCenterTrayChanged();
 }
 
 WebNotificationTray::~WebNotificationTray() {
   // Reset this early so that delegated events during destruction don't cause
   // problems.
   message_center_tray_.reset();
   DestroyStatusIcon();
 }
 
 message_center::MessageCenter* WebNotificationTray::message_center() {
@@ skipping 181 matching lines @@
   DCHECK(status_icon);
   status_icon->SetContextMenu(message_center_tray_->CreateQuietModeMenu());
 }
 
 MessageCenterWidgetDelegate*
 WebNotificationTray::GetMessageCenterWidgetDelegateForTest() {
   return message_center_delegate_;
 }
 
 }  // namespace message_center