arc: Make ChromeVox read an ARC custom notification

ui/message_center/views/message_view.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 UI_MESSAGE_CENTER_VIEWS_MESSAGE_VIEW_H_
 #define UI_MESSAGE_CENTER_VIEWS_MESSAGE_VIEW_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 44 matching lines @@
   // Returns the insets for the shadow it will have for rich notification.
   static gfx::Insets GetShadowInsets();
 
   // Creates a shadow around the notification.
   void CreateShadowBorder();
 
   bool IsCloseButtonFocused();
   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;
   bool OnKeyPressed(const ui::KeyEvent& event) override;
   bool OnKeyReleased(const ui::KeyEvent& event) override;
   void OnPaint(gfx::Canvas* canvas) override;
   void OnFocus() override;
   void OnBlur() override;
   void Layout() override;
 
@@ skipping 18 matching lines @@
 
   // Creates and add close button to view hierarchy when necessary. Derived
   // classes should call this after its view hierarchy is populated to ensure
   // it is on top of other views.
   void CreateOrUpdateCloseButtonView(const Notification& notification);
 
   // Changes the background color being used by |background_view_| and schedules
   // 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(); }
   views::ScrollView* scroller() { return scroller_; }
   MessageCenterController* controller() { return controller_; }
 
  private:
   MessageCenterController* controller_;  // Weak, lives longer then views.
   std::string notification_id_;
   NotifierId notifier_id_;
   views::View* background_view_ = nullptr;  // Owned by views hierarchy.
   std::unique_ptr<views::ImageView> small_image_view_;
   std::unique_ptr<views::ImageButton> close_button_;
   views::ScrollView* scroller_ = nullptr;
 
   base::string16 accessible_name_;
 
   base::string16 display_source_;
 
   std::unique_ptr<views::Painter> focus_painter_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageView);
 };
 
 }  // namespace message_center
 
 #endif // UI_MESSAGE_CENTER_VIEWS_MESSAGE_VIEW_H_