Add Apps.AppListSearchResultDistanceFromOrigin UMA stat.

ui/app_list/views/search_result_tile_item_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_SEARCH_RESULT_TILE_ITEM_VIEW_H_
 #define UI_APP_LIST_VIEWS_SEARCH_RESULT_TILE_ITEM_VIEW_H_
 
 #include "ui/app_list/search_result_observer.h"
 #include "ui/app_list/views/tile_item_view.h"
 #include "ui/views/context_menu_controller.h"
@@ skipping 11 matching lines @@
 // A TileItemView that displays a search result.
 class APP_LIST_EXPORT SearchResultTileItemView
     : public TileItemView,
       public views::ContextMenuController,
       public SearchResultObserver {
  public:
   explicit SearchResultTileItemView(SearchResultContainerView* result_container,
                                     AppListViewDelegate* view_delegate);
   ~SearchResultTileItemView() override;
 
+  SearchResult* result() { return item_; }
   void SetSearchResult(SearchResult* item);
 
   // Overridden from TileItemView:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
   bool OnKeyPressed(const ui::KeyEvent& event) override;
 
   // Overridden from SearchResultObserver:
   void OnIconChanged() override;
   void OnResultDestroying() override;
 
@@ skipping 11 matching lines @@
   AppListViewDelegate* view_delegate_;
 
   scoped_ptr<views::MenuRunner> context_menu_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchResultTileItemView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_SEARCH_RESULT_TILE_ITEM_VIEW_H_