Update dialog close buttons to use vector icons and ripples.

ui/views/controls/button/vector_icon_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 "chrome/browser/ui/views/bar_control_button.h"
+#include "ui/views/controls/button/vector_icon_button.h"
 
 #include "ui/base/material_design/material_design_controller.h"
+#include "ui/gfx/color_palette.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/paint_vector_icon.h"
 #include "ui/gfx/vector_icons_public.h"
 #include "ui/views/border.h"
 #include "ui/views/painter.h"
 
+namespace views {
+
 namespace {
 
 // Extra space around the buttons to increase their event target size.
 const int kButtonExtraTouchSize = 4;
 
 }  // namespace
 
-BarControlButton::BarControlButton(views::ButtonListener* listener)
+VectorIconButton::VectorIconButton(views::ButtonListener* listener)
     : views::ImageButton(listener), id_(gfx::VectorIconId::VECTOR_ICON_NONE) {
   if (ui::MaterialDesignController::IsModeMaterial())
     SetInkDropMode(InkDropMode::ON);
   set_has_ink_drop_action_on_click(true);
   SetImageAlignment(views::ImageButton::ALIGN_CENTER,
                     views::ImageButton::ALIGN_MIDDLE);
   SetFocusPainter(nullptr);
 }
 
-BarControlButton::~BarControlButton() {}
+VectorIconButton::~VectorIconButton() {}
 
-void BarControlButton::SetIcon(
+void VectorIconButton::SetIcon(
     gfx::VectorIconId id,
     const base::Callback<SkColor(void)>& get_text_color_callback) {
   id_ = id;
   get_text_color_callback_ = get_text_color_callback;
 
   if (!border()) {
     SetBorder(views::Border::CreateEmptyBorder(
         kButtonExtraTouchSize, kButtonExtraTouchSize, kButtonExtraTouchSize,
         kButtonExtraTouchSize));
   }
 }
 
-void BarControlButton::OnThemeChanged() {
+void VectorIconButton::OnEnabledChanged() {
+  OnThemeChanged();
+}
+
+void VectorIconButton::OnThemeChanged() {
   SkColor icon_color =
+      get_text_color_callback_.is_null() ? gfx::kChromeIconGrey :
       color_utils::DeriveDefaultIconColor(get_text_color_callback_.Run());
   gfx::ImageSkia image = gfx::CreateVectorIcon(id_, icon_color);
   SetImage(views::CustomButton::STATE_NORMAL, &image);
   image = gfx::CreateVectorIcon(id_, SkColorSetA(icon_color, 0xff / 2));
   SetImage(views::CustomButton::STATE_DISABLED, &image);
   set_ink_drop_base_color(icon_color);
 }
 
-void BarControlButton::OnNativeThemeChanged(const ui::NativeTheme* theme) {
+void VectorIconButton::OnNativeThemeChanged(const ui::NativeTheme* theme) {
   OnThemeChanged();
 }
+
+}  // namespace views