Allow arrow keys to navigate tile results in the experimental app list.

ui/app_list/views/contents_view.cc

Index: ui/app_list/views/contents_view.cc
diff --git a/ui/app_list/views/contents_view.cc b/ui/app_list/views/contents_view.cc
index 948ffca67c2f149c647f589413899991875f6fff..4d6c703966213684ec06adacd9fd67aa2d63e0c3 100644
--- a/ui/app_list/views/contents_view.cc
+++ b/ui/app_list/views/contents_view.cc
@@ -80,7 +80,8 @@ void ContentsView::Init(AppListModel* model) {
     search_results_page_view_->AddSearchResultContainerView(
         results, new SearchResultListView(app_list_main_view_, view_delegate));
     search_results_page_view_->AddSearchResultContainerView(
-        results, new SearchResultTileItemListView());
+        results,
+        new SearchResultTileItemListView(GetSearchBoxView()->search_box()));
 
     AddLauncherPage(search_results_page_view_,
                     AppListModel::STATE_SEARCH_RESULTS);