Experimental app list: Added "All apps" button on start page.

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 "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/app_list/app_list_export.h"
 #include "ui/app_list/app_list_model.h"
 #include "ui/app_list/app_list_view_delegate_observer.h"
 #include "ui/app_list/views/search_box_view_delegate.h"
 #include "ui/base/models/list_model_observer.h"
 #include "ui/views/view.h"
 
 namespace app_list {
 
+class AllAppsTileItemView;
 class AppListMainView;
 class AppListViewDelegate;
 class SearchResultListView;
+class SearchResultTileItemView;
 class TileItemView;
 
 // The start page for the experimental app list.
 class APP_LIST_EXPORT StartPageView : public views::View,
                                       public ui::ListModelObserver,
                                       public SearchBoxViewDelegate {
  public:
   StartPageView(AppListMainView* app_list_main_view,
                 AppListViewDelegate* view_delegate);
   ~StartPageView() override;
 
   void Reset();
   void ShowSearchResults();
 
   bool IsShowingSearchResults() const;
 
   void UpdateForTesting();
 
-  const std::vector<TileItemView*>& tile_views() const { return tile_views_; }
+  const std::vector<SearchResultTileItemView*>& tile_views() const {
+    return search_result_tile_views_;
+  }
+  TileItemView* all_apps_button() const;
   SearchBoxView* dummy_search_box_view() { return search_box_view_; }
 
   // Overridden from views::View:
   bool OnKeyPressed(const ui::KeyEvent& event) override;
   void Layout() override;
 
  private:
   enum ShowState {
     SHOW_START_PAGE,
     SHOW_SEARCH_RESULTS,
@@ skipping 27 matching lines @@
   AppListModel::SearchResults*
       search_results_model_;  // Owned by AppListSyncableService.
 
   AppListViewDelegate* view_delegate_;  // Owned by AppListView.
 
   SearchBoxView* search_box_view_;      // Owned by views hierarchy.
   SearchResultListView* results_view_;  // Owned by views hierarchy.
   views::View* instant_container_;  // Owned by views hierarchy.
   views::View* tiles_container_;    // Owned by views hierarchy.
 
-  std::vector<TileItemView*> tile_views_;
+  std::vector<SearchResultTileItemView*> search_result_tile_views_;
+  AllAppsTileItemView* all_apps_button_;
 
   ShowState show_state_;
 
   // ScheduleUpdate() generates a single weak pointer; if one exists then an
   // update is pending. Further calls to ScheduleUpdate() will have no effect.
   // Once the Update() completes, the weak pointer is invalidated.
   base::WeakPtrFactory<StartPageView> update_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(StartPageView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_START_PAGE_VIEW_H_