views: disable ink drops altogether on Mac

ui/views/controls/button/md_text_button.cc

Index: ui/views/controls/button/md_text_button.cc
diff --git a/ui/views/controls/button/md_text_button.cc b/ui/views/controls/button/md_text_button.cc
index 9e9e780ac00a6f6ac199c18ea9678fa9da2351c9..f208999f89d101dc32c25c892c5dacaaee855e11 100644
--- a/ui/views/controls/button/md_text_button.cc
+++ b/ui/views/controls/button/md_text_button.cc
@@ -188,8 +188,7 @@ void MdTextButton::SetFontList(const gfx::FontList& font_list) {
 MdTextButton::MdTextButton(ButtonListener* listener)
     : LabelButton(listener, base::string16()),
       is_prominent_(false) {
-  SetInkDropMode(PlatformStyle::kUseRipples ? InkDropMode::ON
-                                            : InkDropMode::OFF);
+  SetInkDropMode(InkDropMode::ON);
   set_has_ink_drop_action_on_click(true);
   SetHorizontalAlignment(gfx::ALIGN_CENTER);
   SetFocusForPlatform();