Bring the feedback button to the Mac sad tab

chrome/browser/ui/views/sad_tab_view.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_SAD_TAB_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_SAD_TAB_VIEW_H_
 
-#include "base/compiler_specific.h"
-#include "base/macros.h"
 #include "chrome/browser/ui/sad_tab.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/link_listener.h"
 #include "ui/views/controls/styled_label.h"
 #include "ui/views/controls/styled_label_listener.h"
 #include "ui/views/view.h"
 
 namespace content {
 class WebContents;
 }
 
 namespace views {
 class Label;
 class LabelButton;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 //
 // SadTabView
 //
 //  A views::View subclass used to render the presentation of the crashed
 //  "sad tab" in the browser window when a renderer is destroyed unnaturally.
 //
 ///////////////////////////////////////////////////////////////////////////////
 class SadTabView : public chrome::SadTab,
                    public views::View,
                    public views::LinkListener,
                    public views::ButtonListener {
  public:
-  // Tag to denote which type of action button is displayed.
-  enum ButtonTag {
-    SAD_TAB_BUTTON_FEEDBACK,
-    SAD_TAB_BUTTON_RELOAD,
-  };
-
   SadTabView(content::WebContents* web_contents, chrome::SadTabKind kind);
   ~SadTabView() override;
 
   // Overridden from views::View:
   void Layout() override;
 
   // Overridden from views::LinkListener:
   void LinkClicked(views::Link* source, int event_flags) override;
 
   // Overridden from views::ButtonListener:
   void ButtonPressed(views::Button* source, const ui::Event& event) override;
 
  protected:
   // Overridden from views::View:
   void OnPaint(gfx::Canvas* canvas) override;
 
  private:
-  // Overridden from chrome::SadTab:
-  void Show() override;
-  void Close() override;
 
   views::Label* CreateLabel(const base::string16& text);
   views::Link* CreateLink(const base::string16& text, const SkColor& color);
 
-  content::WebContents* web_contents_;
-  chrome::SadTabKind kind_;
-  bool painted_;
+  bool painted_ = false;
   views::Label* message_;
   views::Link* help_link_;
   views::LabelButton* action_button_;
   views::Label* title_;
-  views::StyledLabel* help_message_;
-  static int total_crashes_;
-
-  DISALLOW_COPY_AND_ASSIGN(SadTabView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_SAD_TAB_VIEW_H__