Remove the most obvious dead code from message center.

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/root_window_controller.h"
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
@@ skipping 11 matching lines @@
 #include "grit/ui_strings.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/screen.h"
 #include "ui/message_center/message_center_tray_delegate.h"
 #include "ui/message_center/message_center_util.h"
 #include "ui/message_center/views/message_bubble_base.h"
 #include "ui/message_center/views/message_center_bubble.h"
-#include "ui/message_center/views/message_popup_bubble.h"
 #include "ui/message_center/views/message_popup_collection.h"
 #include "ui/views/bubble/tray_bubble_view.h"
 #include "ui/views/controls/button/custom_button.h"
 #include "ui/views/controls/image_view.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/controls/menu/menu_runner.h"
 
 #if defined(OS_CHROMEOS)
 
 namespace message_center {
@@ skipping 222 matching lines @@
   else
     message_center_tray_->ShowPopupBubble();
 }
 
 bool WebNotificationTray::ShowPopups() {
   if (status_area_widget()->login_status() == user::LOGGED_IN_LOCKED ||
       message_center_bubble() ||
       !status_area_widget()->ShouldShowWebNotifications()) {
     return false;
   }
-  if (message_center::IsRichNotificationEnabled()) {
-    // No bubble wrappers here, since |popup_collection_| is not a bubble but a
-    // collection of widgets.
-    popup_collection_.reset(new message_center::MessagePopupCollection(
-        ash::Shell::GetContainer(
-            GetWidget()->GetNativeView()->GetRootWindow(),
-            internal::kShellWindowId_StatusContainer),
-        message_center(),
-        message_center_tray_.get()));
-  } else {
-    message_center::MessagePopupBubble* popup_bubble =
-        new message_center::MessagePopupBubble(message_center());
-    popup_bubble_.reset(new internal::WebNotificationBubbleWrapper(
-        this, popup_bubble));
-  }
+
+  popup_collection_.reset(new message_center::MessagePopupCollection(
+      ash::Shell::GetContainer(
+          GetWidget()->GetNativeView()->GetRootWindow(),
+          internal::kShellWindowId_StatusContainer),
+      message_center(),
+      message_center_tray_.get()));
+
   return true;
 }
 
 void WebNotificationTray::UpdatePopups() {
   if (popup_bubble())
     popup_bubble()->bubble()->ScheduleUpdate();
 };
 
 void WebNotificationTray::HidePopups() {
   popup_bubble_.reset();
@@ skipping 224 matching lines @@
 }
 
 message_center::MessageCenterBubble*
 WebNotificationTray::GetMessageCenterBubbleForTest() {
   if (!message_center_bubble())
     return NULL;
   return static_cast<message_center::MessageCenterBubble*>(
       message_center_bubble()->bubble());
 }
 
-message_center::MessagePopupBubble*
-WebNotificationTray::GetPopupBubbleForTest() {
-  if (!popup_bubble())
-    return NULL;
-  return static_cast<message_center::MessagePopupBubble*>(
-      popup_bubble()->bubble());
-}
-
 }  // namespace ash