Send notification to users upon receiving sms messages

ash/common/system/tray/system_tray_item.cc

Index: ash/common/system/tray/system_tray_item.cc
diff --git a/ash/common/system/tray/system_tray_item.cc b/ash/common/system/tray/system_tray_item.cc
index 164a0e419ecc6490163790e075a73de4010549cd..f650c1007833e998d3b082cb48d7e85b370f85b9 100644
--- a/ash/common/system/tray/system_tray_item.cc
+++ b/ash/common/system/tray/system_tray_item.cc
@@ -29,18 +29,12 @@ views::View* SystemTrayItem::CreateDetailedView(LoginStatus status) {
   return nullptr;
 }
 
-views::View* SystemTrayItem::CreateNotificationView(LoginStatus status) {
-  return nullptr;
-}
-
 void SystemTrayItem::DestroyTrayView() {}
 
 void SystemTrayItem::DestroyDefaultView() {}
 
 void SystemTrayItem::DestroyDetailedView() {}
 
-void SystemTrayItem::DestroyNotificationView() {}
-
 void SystemTrayItem::TransitionDetailedView() {
   const int transition_delay =
       GetTrayConstant(TRAY_POPUP_TRANSITION_TO_DETAILED_DELAY);
@@ -72,14 +66,6 @@ void SystemTrayItem::HideDetailedView(bool animate) {
   system_tray()->HideDetailedView(this, animate);
 }
 
-void SystemTrayItem::ShowNotificationView() {
-  system_tray()->ShowNotificationView(this);
-}
-
-void SystemTrayItem::HideNotificationView() {
-  system_tray()->HideNotificationView(this);
-}
-
 bool SystemTrayItem::ShouldShowShelf() const {
   return true;
 }