Add search results to experimental app list start page.

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 80158d8c036e796e5c282210f587e74a79e7e02b..8874bbeccc6d7db126e3298b2dd4f527848d391b 100644
--- a/ui/app_list/views/app_list_main_view.cc
+++ b/ui/app_list/views/app_list_main_view.cc
@@ -168,9 +168,10 @@ void AppListMainView::ModelChanged() {
   Layout();
 }
 
-void AppListMainView::OnContentsViewActivePageChanged() {
+void AppListMainView::UpdateSearchBoxVisibility() {
   search_box_view_->SetVisible(
-      !contents_view_->IsNamedPageActive(ContentsView::NAMED_PAGE_START));
+      !contents_view_->IsNamedPageActive(ContentsView::NAMED_PAGE_START) ||
+      contents_view_->IsShowingSearchResults());
 }
 
 void AppListMainView::OnStartPageSearchButtonPressed() {
@@ -266,6 +267,7 @@ void AppListMainView::QueryChanged(SearchBoxView* sender) {
   base::TrimWhitespace(model_->search_box()->text(), base::TRIM_ALL, &query);
   bool should_show_search = !query.empty();
   contents_view_->ShowSearchResults(should_show_search);
+  UpdateSearchBoxVisibility();
 
   if (should_show_search)
     delegate_->StartSearch();