Send notification to users upon receiving sms messages

ash/common/system/tray/system_tray_bubble.cc

Index: ash/common/system/tray/system_tray_bubble.cc
diff --git a/ash/common/system/tray/system_tray_bubble.cc b/ash/common/system/tray/system_tray_bubble.cc
index c08e00e60430eed4b30a34f263cdbc241a9103bc..1d0e15352da669998f8d0c4cb66d5bcc720d2c3a 100644
--- a/ash/common/system/tray/system_tray_bubble.cc
+++ b/ash/common/system/tray/system_tray_bubble.cc
@@ -90,7 +90,6 @@ SystemTrayBubble::~SystemTrayBubble() {
 void SystemTrayBubble::UpdateView(
     const std::vector<ash::SystemTrayItem*>& items,
     BubbleType bubble_type) {
-  DCHECK(bubble_type != BUBBLE_TYPE_NOTIFICATION);
 
   std::unique_ptr<ui::Layer> scoped_layer;
   if (bubble_type != bubble_type_) {
@@ -196,8 +195,6 @@ void SystemTrayBubble::InitView(views::View* anchor,
   if (bubble_type_ == BUBBLE_TYPE_DETAILED &&
       init_params->max_height < GetDetailedBubbleMaxHeight()) {
     init_params->max_height = GetDetailedBubbleMaxHeight();
-  } else if (bubble_type_ == BUBBLE_TYPE_NOTIFICATION) {
-    init_params->close_on_deactivate = false;
   }
 
   bubble_view_ = TrayBubbleView::Create(anchor, tray_, init_params);
@@ -237,9 +234,6 @@ void SystemTrayBubble::DestroyItemViews() {
       case BUBBLE_TYPE_DETAILED:
         (*it)->DestroyDetailedView();
         break;
-      case BUBBLE_TYPE_NOTIFICATION:
-        (*it)->DestroyNotificationView();
-        break;
     }
   }
 }
@@ -340,9 +334,6 @@ void SystemTrayBubble::CreateItemViews(LoginStatus login_status) {
       case BUBBLE_TYPE_DETAILED:
         item_view = items_[i]->CreateDetailedView(login_status);
         break;
-      case BUBBLE_TYPE_NOTIFICATION:
-        item_view = items_[i]->CreateNotificationView(login_status);
-        break;
     }
     if (item_view) {
       TrayPopupItemContainer* tray_popup_item_container =