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 "base/optional.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);
+  ~AutofillPopupViewViews() override;
 
  private:
-  ~AutofillPopupViewViews() override;
+  FRIEND_TEST_ALL_PREFIXES(AutofillPopupViewViewsTest, OnSelectedRowChanged);
 
   // AutofillPopupView implementation.
   void Show() override;
   void Hide() override;
-  void InvalidateRow(size_t row) override;
-  void UpdateBoundsAndRedrawPopup() override;
+  void OnSelectedRowChanged(
+      base::Optional<size_t> previous_row_selection,
+      base::Optional<size_t> current_row_selection) override;
+  void OnSuggestionsChanged() 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);
 
+  // Creates child views based on the suggestions given by |controller_|. These
+  // child views are used for accessibility events only. We need child views to
+  // populate the correct |AXNodeData| when user selects a suggestion.
+  void CreateChildViews();
+
   AutofillPopupController* controller_;  // Weak reference.
 
   DISALLOW_COPY_AND_ASSIGN(AutofillPopupViewViews);
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_VIEWS_AUTOFILL_AUTOFILL_POPUP_VIEW_VIEWS_H_