Change Ash web notification behavior

ash/system/status_area_widget.h

 // 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.
 
 #ifndef ASH_SYSTEM_STATUS_AREA_WIDGET_H_
 #define ASH_SYSTEM_STATUS_AREA_WIDGET_H_
 
 #include "ash/ash_export.h"
 #include "ash/launcher/background_animator.h"
 #include "ash/system/user/login_status.h"
 #include "ash/wm/shelf_types.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
 
 class ShellDelegate;
 class SystemTray;
 class SystemTrayDelegate;
 class WebNotificationTray;
 
 namespace internal {
 
 class StatusAreaWidgetDelegate;
 
 class ASH_EXPORT StatusAreaWidget : public views::Widget {
  public:
-  enum UserAction {
-    NON_USER_ACTION,
-    USER_ACTION
-  };
-
   StatusAreaWidget();
   virtual ~StatusAreaWidget();
 
   // Creates the SystemTray and the WebNotificationTray.
   void CreateTrayViews(ShellDelegate* shell_delegate);
 
   // Destroys the system tray and web notification tray. Called before
   // tearing down the windows to avoid shutdown ordering issues.
   void Shutdown();
 
   // Update the alignment of the widget and tray views.
   void SetShelfAlignment(ShelfAlignment alignment);
 
   // Update whether to paint a background for each tray view.
   void SetPaintsBackground(
       bool value,
       internal::BackgroundAnimator::ChangeType change_type);
 
-  // Always used to show/hide the web notification tray. These handle any logic
-  // with hiding/supressing notifications from the system tray.
-  void ShowWebNotificationBubble(UserAction user_action);
-  void HideWebNotificationBubble();
+  // Hide any non system (i.e. web) notifications.
+  void HideNonSystemNotifications();
+
+  // Toggle the visibility of system notifications.
+  void SetHideSystemNotifications(bool hide);
+
+  // Returns true if it is OK to show a non system notification.
+  bool ShouldShowNonSystemNotifications();
 
   // Called by the client when the login status changes. Caches login_status
   // and calls UpdateAfterLoginStatusChange for the system tray and the web
   // notification tray.
   void UpdateAfterLoginStatusChange(user::LoginStatus login_status);
 
   SystemTray* system_tray() { return system_tray_; }
   SystemTrayDelegate* system_tray_delegate() {
     return system_tray_delegate_.get();
   }
@@ skipping 14 matching lines @@
   WebNotificationTray* web_notification_tray_;
   user::LoginStatus login_status_;
 
   DISALLOW_COPY_AND_ASSIGN(StatusAreaWidget);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_STATUS_AREA_WIDGET_H_