Add VectorIconButton functionality to ImageButton.

ui/app_list/views/search_result_actions_view.h

 // Copyright 2013 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_APP_LIST_VIEWS_SEARCH_RESULT_ACTIONS_VIEW_H_
 #define UI_APP_LIST_VIEWS_SEARCH_RESULT_ACTIONS_VIEW_H_
 
 #include "base/macros.h"
 #include "ui/app_list/search_result.h"
-#include "ui/views/controls/button/button.h"
+#include "ui/views/controls/button/image_button.h"
 #include "ui/views/view.h"
 
 namespace app_list {
 
 class SearchResultActionsViewDelegate;
 
 // SearchResultActionsView displays a SearchResult::Actions in a button
 // strip. Each action is presented as a button and horizontally laid out.
 class SearchResultActionsView : public views::View,
-                                public views::ButtonListener {
+                                public views::ImageButtonDelegate {
  public:
   explicit SearchResultActionsView(SearchResultActionsViewDelegate* delegate);
   ~SearchResultActionsView() override;
 
   void SetActions(const SearchResult::Actions& actions);
 
   void SetSelectedAction(int action_index);
   int selected_action() const { return selected_action_; }
 
   bool IsValidActionIndex(int action_index) const;
 
  private:
   void CreateImageButton(const SearchResult::Action& action);
   void CreateBlueButton(const SearchResult::Action& action);
 
-  // views::View overrides:
+  // views::View:
   void OnPaint(gfx::Canvas* canvas) override;
 
-  // views::ButtonListener overrides:
+  // views::ImageButtonDelegate:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
 
   SearchResultActionsViewDelegate* delegate_;  // Not owned.
   int selected_action_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchResultActionsView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_SEARCH_RESULT_ACTIONS_VIEW_H_