macviews: honor system control tint setting

ui/views/controls/button/label_button.cc

 // Copyright (c) 2012 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/label_button.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 408 matching lines @@
   // Typically the border renders differently when focused.
   SchedulePaint();
 }
 
 void LabelButton::OnNativeThemeChanged(const ui::NativeTheme* theme) {
   ResetColorsFromNativeTheme();
   UpdateThemedBorder();
   ResetLabelEnabledColor();
   // Invalidate the layout to pickup the new insets from the border.
   InvalidateLayout();
+  // The entire button has to be repainted here, since the native theme can
+  // define the tint for the entire background/border/focus ring.
+  SchedulePaint();
 }
 
 void LabelButton::AddInkDropLayer(ui::Layer* ink_drop_layer) {
   image()->SetPaintToLayer(true);
   image()->layer()->SetFillsBoundsOpaquely(false);
   ink_drop_container_->SetVisible(true);
   ink_drop_container_->layer()->Add(ink_drop_layer);
 }
 
 void LabelButton::RemoveInkDropLayer(ui::Layer* ink_drop_layer) {
@@ skipping 167 matching lines @@
 void LabelButton::ResetLabelEnabledColor() {
   const SkColor color =
       explicitly_set_colors_[state()]
           ? button_state_colors_[state()]
           : PlatformStyle::TextColorForButton(button_state_colors_, *this);
   if (state() != STATE_DISABLED && label_->enabled_color() != color)
     label_->SetEnabledColor(color);
 }
 
 }  // namespace views