views: disable ink drops altogether on Mac

ui/views/controls/button/md_text_button.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/controls/button/md_text_button.h"
 
 #include "base/i18n/case_conversion.h"
 #include "base/memory/ptr_util.h"
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/gfx/canvas.h"
@@ skipping 170 matching lines @@
 }
 
 void MdTextButton::SetFontList(const gfx::FontList& font_list) {
   NOTREACHED()
       << "Don't call MdTextButton::SetFontList (it will soon be protected)";
 }
 
 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();
   const int minimum_width = LayoutProvider::Get()->GetDistanceMetric(
       DISTANCE_DIALOG_BUTTON_MINIMUM_WIDTH);
   SetMinSize(gfx::Size(minimum_width, 0));
   SetFocusPainter(nullptr);
   label()->SetAutoColorReadabilityEnabled(false);
   set_request_focus_on_press(false);
   LabelButton::SetFontList(GetMdFontList());
@@ skipping 95 matching lines @@
         stroke_color, gfx::kDisabledControlAlpha);
   }
 
   DCHECK_EQ(SK_AlphaOPAQUE, static_cast<int>(SkColorGetA(bg_color)));
   set_background(Background::CreateBackgroundPainter(
       Painter::CreateRoundRectWith1PxBorderPainter(bg_color, stroke_color,
                                                    kInkDropSmallCornerRadius)));
 }
 
 }  // namespace views