Harmony: disable ripples 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 32e33a6eb2d5aa2e02e7295f1f7cde7b42d60d8c..247e2a8ff5d22646af042a2e306bf3ca70b42c52 100644
--- a/ui/views/controls/button/md_text_button.cc
+++ b/ui/views/controls/button/md_text_button.cc
@@ -16,6 +16,7 @@
 #include "ui/views/border.h"
 #include "ui/views/controls/button/blue_button.h"
 #include "ui/views/painter.h"
+#include "ui/views/style/platform_style.h"
 
 namespace views {
 
@@ -178,6 +179,10 @@ std::unique_ptr<views::InkDropRipple> MdTextButton::CreateInkDropRipple()
           GetInkDropBaseColor(), ink_drop_visible_opacity()));
 }
 
+void MdTextButton::StateChanged() {
+  UpdateColors();

[sky, 2016/08/25 23:44:50]

Are you sure you don't need to call LabelButton::StateChanged() too?

[Elly Fong-Jones, 2016/08/26 15:46:44]

Nope, I totally do. Good catch.

+}
+
 std::unique_ptr<views::InkDropHighlight> MdTextButton::CreateInkDropHighlight()
     const {
   if (!ShouldShowInkDropHighlight())
@@ -235,7 +240,8 @@ MdTextButton::MdTextButton(ButtonListener* listener)
     : LabelButton(listener, base::string16()),
       focus_ring_(new internal::MdFocusRing()),
       is_cta_(false) {
-  SetInkDropMode(InkDropMode::ON);
+  SetInkDropMode(PlatformStyle::kUseRipples ? InkDropMode::ON
+                                            : InkDropMode::OFF);
   set_has_ink_drop_action_on_click(true);
   SetHorizontalAlignment(gfx::ALIGN_CENTER);
   SetFocusForPlatform();
@@ -306,6 +312,8 @@ void MdTextButton::UpdateColors() {
                       ? color_utils::BlendTowardOppositeLuma(text_color, 0xD8)
                       : SK_ColorTRANSPARENT;
 
+  bg_color = PlatformStyle::BackgroundColorForMdButton(bg_color, state());
+
   const SkAlpha kStrokeOpacity = 0x1A;
   SkColor stroke_color = (is_cta_ || color_utils::IsDark(text_color))
                              ? SkColorSetA(SK_ColorBLACK, kStrokeOpacity)