[ios clean] Add overflow buttons for ToolsMenu.

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

Index: ios/clean/chrome/browser/ui/toolbar/BUILD.gn
diff --git a/ios/clean/chrome/browser/ui/toolbar/BUILD.gn b/ios/clean/chrome/browser/ui/toolbar/BUILD.gn
index d7aa9070b708df8a9df3417f297eea99717cbb13..c0df5d91ae1fb0ad4c2b5f0fe0e28231d9484638 100644
--- a/ios/clean/chrome/browser/ui/toolbar/BUILD.gn
+++ b/ios/clean/chrome/browser/ui/toolbar/BUILD.gn
@@ -23,22 +23,33 @@ source_set("toolbar") {
 
 source_set("toolbar_ui") {
   sources = [
+    "toolbar_view_controller.h",
+    "toolbar_view_controller.mm",
+  ]
+  deps = [
+    ":toolbar_components_ui",
+    "//base",
+    "//ios/clean/chrome/browser/ui/actions",
+    "//ios/clean/chrome/browser/ui/animators",
+    "//ios/clean/chrome/browser/ui/commands",
+    "//ios/clean/chrome/browser/ui/tools",
+  ]
+  libs = [ "UIKit.framework" ]
+  configs += [ "//build/config/compiler:enable_arc" ]
+}
+
+source_set("toolbar_components_ui") {
+  sources = [
     "toolbar_button+factory.h",
     "toolbar_button+factory.mm",
     "toolbar_button.h",
     "toolbar_button.mm",
     "toolbar_component_options.h",
-    "toolbar_view_controller.h",
-    "toolbar_view_controller.mm",
   ]
   deps = [
     "//base",
     "//ios/chrome/app/theme",
     "//ios/chrome/browser/ui",
-    "//ios/clean/chrome/browser/ui/actions",
-    "//ios/clean/chrome/browser/ui/animators",
-    "//ios/clean/chrome/browser/ui/commands",
-    "//ios/clean/chrome/browser/ui/tools",
   ]
   libs = [ "UIKit.framework" ]
   configs += [ "//build/config/compiler:enable_arc" ]