views: disable ink drops altogether on Mac

ui/views/controls/combobox/combobox.cc

Index: ui/views/controls/combobox/combobox.cc
diff --git a/ui/views/controls/combobox/combobox.cc b/ui/views/controls/combobox/combobox.cc
index f9c1c2d5711a0b7efda01f07c2f78a7b2719ce1c..6781ecb9fae6ae98676fe7415ae638991c39e664 100644
--- a/ui/views/controls/combobox/combobox.cc
+++ b/ui/views/controls/combobox/combobox.cc
@@ -123,8 +123,7 @@ class TransparentButton : public CustomButton {
     set_notify_action(PlatformStyle::kMenuNotifyActivationAction);
 
     if (UseMd()) {
-      SetInkDropMode(PlatformStyle::kUseRipples ? InkDropMode::ON
-                                                : InkDropMode::OFF);
+      SetInkDropMode(InkDropMode::ON);
       set_has_ink_drop_action_on_click(true);
     }
   }