Show the unread button even without any unread notifications

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/ash_switches.h"
 #include "ash/root_window_controller.h"
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shelf/shelf_layout_manager_observer.h"
@@ skipping 137 matching lines @@
   gfx::Size GetPreferredSize() const override {
     return gfx::Size(kShelfItemHeight, kShelfItemHeight);
   }
 
   int GetHeightForWidth(int width) const override {
     return GetPreferredSize().height();
   }
 
  private:
   void UpdateIconVisibility() {
-    unread_label_->SetEnabledColor(
-        (!is_bubble_visible_ && unread_count_ > 0) ?
-        kWebNotificationColorWithUnread : kWebNotificationColorNoUnread);
+    unread_label_->SetEnabledColor((unread_count_ > 0)
+                                       ? kWebNotificationColorWithUnread
+                                       : kWebNotificationColorNoUnread);
     SchedulePaint();
   }
 
   bool is_bubble_visible_;
   int unread_count_;
 
   views::Label* unread_label_;
 
   DISALLOW_COPY_AND_ASSIGN(WebNotificationButton);
 };
@@ skipping 276 matching lines @@
   if (IsMessageCenterBubbleVisible())
     button_->SetState(views::CustomButton::STATE_PRESSED);
   else
     button_->SetState(views::CustomButton::STATE_NORMAL);
   bool userAddingRunning = ash::Shell::GetInstance()
                                ->session_state_delegate()
                                ->IsInSecondaryLoginScreen();
 
   SetVisible((status_area_widget()->login_status() != user::LOGGED_IN_NONE) &&
              (status_area_widget()->login_status() != user::LOGGED_IN_LOCKED) &&
-             !userAddingRunning && (message_center->NotificationCount() > 0));
+             !userAddingRunning);
   Layout();
   SchedulePaint();
 }
 
 void WebNotificationTray::ClickedOutsideBubble() {
   // Only hide the message center
   if (!message_center_bubble())
     return;
 
   message_center_tray_->HideMessageCenterBubble();
@@ skipping 11 matching lines @@
 
 message_center::MessageCenterBubble*
 WebNotificationTray::GetMessageCenterBubbleForTest() {
   if (!message_center_bubble())
     return NULL;
   return static_cast<message_center::MessageCenterBubble*>(
       message_center_bubble()->bubble());
 }
 
 }  // namespace ash