app_list: Show apps grid after installing from cws result.

ui/app_list/views/app_list_main_view.cc

Index: ui/app_list/views/app_list_main_view.cc
diff --git a/ui/app_list/views/app_list_main_view.cc b/ui/app_list/views/app_list_main_view.cc
index d3791ad9c9a5a556b9046efcb325ea13c1cc1be2..f574cd17287f20a418ea1d596873513170b13561 100644
--- a/ui/app_list/views/app_list_main_view.cc
+++ b/ui/app_list/views/app_list_main_view.cc
@@ -226,4 +226,10 @@ void AppListMainView::InvokeResultAction(SearchResult* result,
     delegate_->InvokeSearchResultAction(result, action_index, event_flags);
 }
 
+void AppListMainView::OnResultInstalled(SearchResult* result) {
+  // Clears the search to show the apps grid. The last installed app
+  // should be highlighted and made visible already.
+  search_box_view_->ClearSearch();
+}
+
 }  // namespace app_list