Fix the Crash in the launcher's start page on Chrome OS.

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 30 matching lines @@
 
   void ClearSelectedIndex();
 
   // The currently selected index. Returns -1 on no selection.
   int selected_index() const { return selected_index_; }
 
   // Returns whether |index| is a valid index for selection.
   bool IsValidSelectionIndex(int index) const;
 
   int num_results() const { return num_results_; }
+  void set_num_results(int num_results) { num_results_ = num_results; }
 
   void set_container_score(double score) { container_score_ = score; }
   double container_score() const { return container_score_; }
 
   // 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
@@ skipping 42 matching lines @@
 
   // 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_