Send notification to users upon receiving sms messages

ash/common/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/common/system/web_notification/web_notification_tray.h"
 
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/shelf/shelf_constants.h"
 #include "ash/common/shelf/wm_shelf.h"
@@ skipping 366 matching lines @@
   TrayBackgroundView* anchor_tray = this;
   if (IsHorizontalAlignment(shelf_alignment())) {
     anchor_tray = WmShelf::ForWindow(status_area_window_)
                       ->GetStatusAreaWidget()
                       ->system_tray();
   }
 
   message_center_bubble_.reset(new WebNotificationBubbleWrapper(
       this, anchor_tray, message_center_bubble));
 
-  system_tray_->SetHideNotifications(true);
   shelf()->UpdateAutoHideState();
   SetIsActive(true);
   return true;
 }
 
 bool WebNotificationTray::ShowMessageCenter() {
   return ShowMessageCenterInternal(false /* show_settings */);
 }
 
 void WebNotificationTray::HideMessageCenter() {
   if (!message_center_bubble())
     return;
   SetIsActive(false);
   message_center_bubble_.reset();
   should_block_shelf_auto_hide_ = false;
   show_message_center_on_unlock_ = false;
-  system_tray_->SetHideNotifications(false);
   shelf()->UpdateAutoHideState();
 }
 
 void WebNotificationTray::SetTrayBubbleHeight(int height) {
   popup_alignment_delegate_->SetTrayBubbleHeight(height);
 }
 
 int WebNotificationTray::tray_bubble_height_for_test() const {
   return popup_alignment_delegate_->tray_bubble_height_for_test();
 }
 
 bool WebNotificationTray::ShowPopups() {
   if (message_center_bubble())
     return false;
 
   popup_collection_->DoUpdateIfPossible();
   return true;
 }
 
 void WebNotificationTray::HidePopups() {
   DCHECK(popup_collection_.get());
   popup_collection_->MarkAllPopupsShown();
 }
 
 // Private methods.
 
 bool WebNotificationTray::ShouldShowMessageCenter() {
-  return WmShell::Get()->system_tray_delegate()->ShouldShowNotificationTray() &&
-         !system_tray_->HasNotificationBubble();
+  return WmShell::Get()->system_tray_delegate()->ShouldShowNotificationTray();
 }
 
 bool WebNotificationTray::ShouldBlockShelfAutoHide() const {
   return should_block_shelf_auto_hide_;
 }
 
 bool WebNotificationTray::IsMessageCenterBubbleVisible() const {
   return (message_center_bubble() &&
           message_center_bubble()->bubble()->IsVisible());
 }
@@ skipping 219 matching lines @@
 
 message_center::MessageCenterBubble*
 WebNotificationTray::GetMessageCenterBubbleForTest() {
   if (!message_center_bubble())
     return nullptr;
   return static_cast<message_center::MessageCenterBubble*>(
       message_center_bubble()->bubble());
 }
 
 }  // namespace ash