Uses child views in Autofill Popup so we can trigger

chrome/browser/ui/views/autofill/autofill_popup_view_views.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 CHROME_BROWSER_UI_VIEWS_AUTOFILL_AUTOFILL_POPUP_VIEW_VIEWS_H_
 #define CHROME_BROWSER_UI_VIEWS_AUTOFILL_AUTOFILL_POPUP_VIEW_VIEWS_H_
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "chrome/browser/ui/autofill/autofill_popup_view.h"
 #include "chrome/browser/ui/views/autofill/autofill_popup_base_view.h"
 
 namespace autofill {
 
 class AutofillPopupController;
 
 // Views toolkit implementation for AutofillPopupView.
 class AutofillPopupViewViews : public AutofillPopupBaseView,
                                public AutofillPopupView {
  public:
+  // |controller| should not be null.
   AutofillPopupViewViews(AutofillPopupController* controller,
                          views::Widget* parent_widget);
 
  private:
   ~AutofillPopupViewViews() override;
 
   // AutofillPopupView implementation.
   void Show() override;
   void Hide() override;
   void InvalidateRow(size_t row) override;
   void UpdateBoundsAndRedrawPopup() override;
+  void NotifyAccessibilityEventForRow(ui::AXEvent event_type,
+                                      size_t row) override;
 
   // views::Views implementation
   void OnPaint(gfx::Canvas* canvas) override;
+  void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
 
   // Draw the given autofill entry in |entry_rect|.
   void DrawAutofillEntry(gfx::Canvas* canvas,
                          int index,
                          const gfx::Rect& entry_rect);
 
   AutofillPopupController* controller_;  // Weak reference.
 
   DISALLOW_COPY_AND_ASSIGN(AutofillPopupViewViews);
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_VIEWS_AUTOFILL_AUTOFILL_POPUP_VIEW_VIEWS_H_