Add SetMinimumWidth to Menu2 for chromeos. Removed LanguageSwitchModel::GetFirstLevelMenuWidth

views/controls/menu/native_menu_gtk.cc

Index: views/controls/menu/native_menu_gtk.cc
diff --git a/views/controls/menu/native_menu_gtk.cc b/views/controls/menu/native_menu_gtk.cc
index 7954d20057ebc416589ff239baf6dfd120a23e3b..b65d7e58e21cc5942246c13734b6c25c95682ae3 100644
--- a/views/controls/menu/native_menu_gtk.cc
+++ b/views/controls/menu/native_menu_gtk.cc
@@ -195,6 +195,10 @@ void NativeMenuGtk::RemoveMenuListener(MenuListener* listener) {
   }
 }
 
+void NativeMenuGtk::SetMinimumWidth(int width) {
+  gtk_widget_set_size_request(menu_, width, -1);
+}
+
 bool NativeMenuGtk::Dispatch(GdkEvent* event) {
   if (menu_hidden_) {
     // The menu has been closed but the message loop is still nested. Don't