App list start page is no longer a SearchResultContainerView.

ui/app_list/views/start_page_view.h

 // Copyright 2014 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_START_PAGE_VIEW_H_
 #define UI_APP_LIST_VIEWS_START_PAGE_VIEW_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "ui/app_list/app_list_export.h"
-#include "ui/app_list/views/search_result_container_view.h"
+#include "ui/views/view.h"
 
 namespace app_list {
 
 class AllAppsTileItemView;
 class AppListMainView;
 class AppListViewDelegate;
 class SearchResultTileItemView;
+class StartPageTilesContainer;
 class TileItemView;
 
 // The start page for the experimental app list.
-class APP_LIST_EXPORT StartPageView : public SearchResultContainerView {
+class APP_LIST_EXPORT StartPageView : public views::View {
  public:
   StartPageView(AppListMainView* app_list_main_view,
                 AppListViewDelegate* view_delegate);
   ~StartPageView() override;
 
   void Reset();
 
   void UpdateForTesting();
 
-  const std::vector<SearchResultTileItemView*>& tile_views() const {
-    return search_result_tile_views_;
-  }
+  const std::vector<SearchResultTileItemView*>& tile_views() const;
   TileItemView* all_apps_button() const;
 
   // Called when the start page view is displayed.
   void OnShow();
 
   // Called when the start page view is hidden (while the app list is still
   // open).
   void OnHide();
 
   // Overridden from views::View:
   void Layout() override;
   bool OnKeyPressed(const ui::KeyEvent& event) override;
 
-  // Overridden from SearchResultContainerView:
-  void OnContainerSelected(bool from_bottom) override;
-
   // Returns search box bounds to use when the start page is active.
   gfx::Rect GetSearchBoxBounds() const;
 
   // Updates whether the custom page clickzone is visible.
   void UpdateCustomPageClickzoneVisibility();
 
  private:
-  // Overridden from SearchResultContainerView:
-  int Update() override;
-  void UpdateSelectedIndex(int old_selected, int new_selected) override;
-
   void InitInstantContainer();
-  void InitTilesContainer();
 
   TileItemView* GetTileItemView(size_t index);
 
   // The parent view of ContentsView which is the parent of this view.
   AppListMainView* app_list_main_view_;
 
   AppListViewDelegate* view_delegate_;  // Owned by AppListView.
 
   views::View* search_box_spacer_view_;  // Owned by views hierarchy.
   views::View* instant_container_;  // Owned by views hierarchy.
-  views::View* tiles_container_;    // Owned by views hierarchy.
-
-  std::vector<SearchResultTileItemView*> search_result_tile_views_;
-  AllAppsTileItemView* all_apps_button_;
+  StartPageTilesContainer* tiles_container_;  // Owned by views hierarchy.
 
   DISALLOW_COPY_AND_ASSIGN(StartPageView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_START_PAGE_VIEW_H_