Initial implementation of new-style notification

ui/arc/notification/arc_custom_notification_view.h

Index: ui/arc/notification/arc_custom_notification_view.h
diff --git a/ui/arc/notification/arc_custom_notification_view.h b/ui/arc/notification/arc_custom_notification_view.h
index ce2d65d90e4d0826cd23ffe547c3d0b055ed046d..0257b3db82944ffb18bac1a2c5d4e6689e3b637b 100644
--- a/ui/arc/notification/arc_custom_notification_view.h
+++ b/ui/arc/notification/arc_custom_notification_view.h
@@ -87,6 +87,7 @@ class ArcCustomNotificationView
   void ActivateToast();
   void StartControlButtonsColorAnimation();
   bool ShouldUpdateControlButtonsColor() const;
+  void UpdateAccessibleName();
 
   // views::NativeViewHost
   void ViewHierarchyChanged(
@@ -99,6 +100,7 @@ class ArcCustomNotificationView
   void OnBlur() override;
   views::FocusTraversable* GetFocusTraversable() override;
   bool HandleAccessibleAction(const ui::AXActionData& action) override;
+  void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
 
   // views::ButtonListener
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
@@ -154,6 +156,8 @@ class ArcCustomNotificationView
 
   std::unique_ptr<gfx::LinearAnimation> control_button_color_animation_;
 
+  base::string16 accessible_name_;
+
   DISALLOW_COPY_AND_ASSIGN(ArcCustomNotificationView);
 };