Add tiles to the experimental app list start page.

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 c07c867abb683828f0816b24cf25b4211f4b8a88..8d56b072a1304503e3874ef12246aea080200fae 100644
--- a/ui/app_list/views/contents_view.cc
+++ b/ui/app_list/views/contents_view.cc
@@ -77,10 +77,8 @@ ContentsView::ContentsView(AppListMainView* app_list_main_view,
   view_model_->Add(search_results_view, kIndexSearchResults);
 
   if (app_list::switches::IsExperimentalAppListEnabled()) {
-    content::WebContents* start_page_contents =
-        view_delegate->GetStartPageContents();
     StartPageView* start_page_view =
-        new StartPageView(app_list_main_view, start_page_contents);
+        new StartPageView(app_list_main_view, view_delegate);
     AddChildView(start_page_view);
     view_model_->Add(start_page_view, kIndexStartPage);
   }