Show extension settings for extension notifications

ash/system/web_notification/web_notification_tray.h

Index: ash/system/web_notification/web_notification_tray.h
diff --git a/ash/system/web_notification/web_notification_tray.h b/ash/system/web_notification/web_notification_tray.h
index cf0f8293490855e59d509795365075686b551dd9..0aaeb92d4be5ed70f45952989e34eb18f47c49be 100644
--- a/ash/system/web_notification/web_notification_tray.h
+++ b/ash/system/web_notification/web_notification_tray.h
@@ -139,10 +139,14 @@ class ASH_EXPORT WebNotificationTray : public internal::TrayBackgroundView {
   // Called when a notification is clicked on. Event is passed to the Delegate.
   void OnClicked(const std::string& id);
 
+  bool menu_open() const { return menu_open_; }
+  void set_menu_open(bool menu_open) { menu_open_ = menu_open; }
+
  private:
   class Bubble;
   friend class internal::WebNotificationButtonView;
   friend class internal::WebNotificationMenuModel;
+  friend class internal::WebNotificationList;
   friend class internal::WebNotificationView;
   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, WebNotifications);
   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, WebNotificationBubble);
@@ -165,6 +169,7 @@ class ASH_EXPORT WebNotificationTray : public internal::TrayBackgroundView {
   views::Label* count_label_;
   Delegate* delegate_;
   bool show_message_center_on_unlock_;
+  bool menu_open_;
 
   DISALLOW_COPY_AND_ASSIGN(WebNotificationTray);
 };