arc: Make ChromeVox read an ARC custom notification

ui/message_center/views/message_view.h

Index: ui/message_center/views/message_view.h
diff --git a/ui/message_center/views/message_view.h b/ui/message_center/views/message_view.h
index bc53cae29638016018d0e0127017fbf228ab9fb7..3f07cb5dd4903455ae4e699793fab588f4a76899 100644
--- a/ui/message_center/views/message_view.h
+++ b/ui/message_center/views/message_view.h
@@ -62,10 +62,6 @@ class MESSAGE_CENTER_EXPORT MessageView : public views::SlideOutView,
   void RequestFocusOnCloseButton();
   bool IsPinned();
 
-  void set_accessible_name(const base::string16& accessible_name) {
-    accessible_name_ = accessible_name;
-  }
-
   // Overridden from views::View:
   void GetAccessibleState(ui::AXViewState* state) override;
   bool OnMousePressed(const ui::MouseEvent& event) override;
@@ -104,6 +100,10 @@ class MESSAGE_CENTER_EXPORT MessageView : public views::SlideOutView,
   // a paint.
   virtual void SetDrawBackgroundAsActive(bool active);
 
+  // Creates a text for spoken feedback from the data contained
+  // in the notification.
+  base::string16 CreateAccessibleName(const Notification& notification);
+
   views::View* background_view() { return background_view_; }
   views::ImageView* small_image() { return small_image_view_.get(); }
   views::ImageButton* close_button() { return close_button_.get(); }