[ios clean] Add overflow buttons for ToolsMenu.

ios/clean/chrome/browser/ui/tools/BUILD.gn

Index: ios/clean/chrome/browser/ui/tools/BUILD.gn
diff --git a/ios/clean/chrome/browser/ui/tools/BUILD.gn b/ios/clean/chrome/browser/ui/tools/BUILD.gn
index 07536f345bf4e3533778499aa1eba2a682f4097f..b9c0cfac9dbae4fa10c9f75851791e649a221803 100644
--- a/ios/clean/chrome/browser/ui/tools/BUILD.gn
+++ b/ios/clean/chrome/browser/ui/tools/BUILD.gn
@@ -23,6 +23,8 @@ source_set("tools") {
 
 source_set("tools_ui") {
   sources = [
+    "menu_overflow_controls_stackview.h",
+    "menu_overflow_controls_stackview.mm",
     "menu_view_controller.h",
     "menu_view_controller.mm",
   ]
@@ -33,6 +35,7 @@ source_set("tools_ui") {
     "//base",
     "//base:i18n",
     "//ios/clean/chrome/browser/ui/actions",
+    "//ios/clean/chrome/browser/ui/toolbar:toolbar_components",
     "//ios/third_party/material_roboto_font_loader_ios",
   ]
 }