Fix the Crash in the launcher's start page (a better approach).

ui/app_list/views/search_result_container_view.h

 // Copyright (c) 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_SEARCH_RESULT_CONTAINER_VIEW_H_
 #define UI_APP_LIST_VIEWS_SEARCH_RESULT_CONTAINER_VIEW_H_
 
 #include <stddef.h>
 
 #include "base/macros.h"
@@ skipping 43 matching lines @@
 
   // Updates the distance_from_origin() properties of the results in this
   // container. |y_index| is the absolute y-index of the first result of this
   // container (counting from the top of the app list).
   virtual void NotifyFirstResultYIndex(int y_index) = 0;
 
   // Gets the number of down keystrokes from the beginning to the end of this
   // container.
   virtual int GetYSize() = 0;
 
-  // Schedules an Update call using |update_factory_|. Do nothing if there is a
-  // pending call.
-  void ScheduleUpdate();
+  // Batching method that actually performs the update and updates layout.
+  void Update();
 
   // Returns whether an update is currently scheduled for this container.
   bool UpdateScheduled();
 
   // Overridden from ui::ListModelObserver:
   void ListItemsAdded(size_t start, size_t count) override;
   void ListItemsRemoved(size_t start, size_t count) override;
   void ListItemMoved(size_t index, size_t target_index) override;
   void ListItemsChanged(size_t start, size_t count) override;
 
   // Updates the container for being selected. |from_bottom| is true if the view
   // was entered into from a selected view below it; false if entered into from
   // above. |directional_movement| is true if the navigation was caused by
   // directional controls (eg, arrow keys), as opposed to linear controls (eg,
   // Tab).
   virtual void OnContainerSelected(bool from_bottom,
                                    bool directional_movement) = 0;
 
  private:
+  // Schedules an Update call using |update_factory_|. Do nothing if there is a
+  // pending call.
+  void ScheduleUpdate();
+
   // Updates UI with model. Returns the number of visible results.
-  virtual int Update() = 0;
+  virtual int DoUpdate() = 0;
 
   // Updates UI for a change in the selected index.
   virtual void UpdateSelectedIndex(int old_selected, int new_selected) = 0;
 
-  // Batching method that actually performs the update and updates layout.
-  void DoUpdate();
-
   Delegate* delegate_;
 
   int selected_index_;
   int num_results_;
 
   double container_score_;
 
   AppListModel::SearchResults* results_;  // Owned by AppListModel.
 
   // The factory that consolidates multiple Update calls into one.
   base::WeakPtrFactory<SearchResultContainerView> update_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchResultContainerView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_SEARCH_RESULT_CONTAINER_VIEW_H_