Shows the notification icon during the login session.

ash/system/web_notification/web_notification_tray.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 "ash/system/web_notification/web_notification_tray.h"
 
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/tray/tray_bubble_wrapper.h"
@@ skipping 70 matching lines @@
 WebNotificationTray::WebNotificationTray(
     internal::StatusAreaWidget* status_area_widget)
     : internal::TrayBackgroundView(status_area_widget),
       button_(NULL),
       show_message_center_on_unlock_(false) {
   message_center_.reset(new message_center::MessageCenter(this));
   button_ = new views::ImageButton(this);
   button_->set_triggerable_event_flags(
       ui::EF_LEFT_MOUSE_BUTTON | ui::EF_RIGHT_MOUSE_BUTTON);
   tray_container()->AddChildView(button_);
+  SetVisible(false);
   UpdateTray();
 }
 
 WebNotificationTray::~WebNotificationTray() {
   // message_center_ has a weak pointer to this; destroy it early.
   message_center_.reset();
   // Release any child views that might have back pointers before ~View().
   message_center_bubble_.reset();
   popup_bubble_.reset();
   if (quiet_mode_bubble() && quiet_mode_bubble_->GetBubbleWidget())
@@ skipping 90 matching lines @@
     if (message_center_bubble()) {
       message_center_bubble_.reset();
       show_message_center_on_unlock_ = true;
     }
     HidePopupBubble();
   } else {
     if (show_message_center_on_unlock_)
       ShowMessageCenterBubble();
     show_message_center_on_unlock_ = false;
   }
+  // The status icon should be always visible except for lock screen / login
+  // screen, to allow quiet mode and settings.
+  SetVisible((login_status != user::LOGGED_IN_NONE) &&
+             (login_status != user::LOGGED_IN_LOCKED));
   UpdateTray();
 }
 
 bool WebNotificationTray::IsMessageCenterBubbleVisible() const {
   return (message_center_bubble() &&
           message_center_bubble_->bubble()->IsVisible());
 }
 
 bool WebNotificationTray::IsMouseInNotificationBubble() const {
   if (!popup_bubble())
@@ skipping 138 matching lines @@
         IDR_AURA_UBER_TRAY_NOTIFY_BUTTON_INACTIVE_NORMAL));
     button_->SetImage(views::CustomButton::STATE_HOVERED, rb.GetImageSkiaNamed(
         IDR_AURA_UBER_TRAY_NOTIFY_BUTTON_INACTIVE_HOVER));
     button_->SetImage(views::CustomButton::STATE_PRESSED, rb.GetImageSkiaNamed(
         IDR_AURA_UBER_TRAY_NOTIFY_BUTTON_INACTIVE_PRESSED));
   }
   if (message_center_bubble())
     button_->SetState(views::CustomButton::STATE_PRESSED);
   else
     button_->SetState(views::CustomButton::STATE_NORMAL);
-  bool is_visible =
-      (status_area_widget()->login_status() != user::LOGGED_IN_NONE) &&
-      (status_area_widget()->login_status() != user::LOGGED_IN_LOCKED) &&
-      (message_center_->NotificationCount() > 0);
-  SetVisible(is_visible);
   Layout();
   SchedulePaint();
 }
 
 bool WebNotificationTray::ClickedOutsideBubble() {
   // Only hide the message center and quiet mode bubble.
   if (!message_center_bubble() && !quiet_mode_bubble())
     return false;
   quiet_mode_bubble_.reset();
   HideMessageCenterBubble();
@@ skipping 12 matching lines @@
 
 message_center::MessagePopupBubble*
 WebNotificationTray::GetPopupBubbleForTest() {
   if (!popup_bubble_.get())
     return NULL;
   return static_cast<message_center::MessagePopupBubble*>(
       popup_bubble_->bubble());
 }
 
 }  // namespace ash