Bring the feedback button to the Mac sad tab

chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.h

-// Copyright (c) 2011 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_COCOA_TAB_CONTENTS_SAD_TAB_CONTROLLER_H_
-#define CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_SAD_TAB_CONTROLLER_H_
-
-#include "base/compiler_specific.h"
-#include "base/mac/scoped_nsobject.h"
-#include "base/macros.h"
-#include "chrome/browser/ui/sad_tab.h"
-
-#import <Cocoa/Cocoa.h>
-
-@class SadTabController;
-@class SadTabView;
-
-namespace chrome {
-
-class SadTabCocoa : public SadTab {
- public:
-  explicit SadTabCocoa(content::WebContents* web_contents);
-
-  ~SadTabCocoa() override;
-
- private:
-  // Overridden from SadTab:
-  void Show() override;
-  void Close() override;
-
-  base::scoped_nsobject<SadTabController> sad_tab_controller_;
-
-  content::WebContents* web_contents_;
-
-  DISALLOW_COPY_AND_ASSIGN(SadTabCocoa);
-};
-
-}  // namespace chrome
-
-// A controller class that manages the SadTabView (aka "Aw Snap" or crash page).
-@interface SadTabController : NSViewController
-
-// Designated initializer.
-- (id)initWithWebContents:(content::WebContents*)webContents;
-
-// Returns a weak reference to the WebContents whose WebContentsView created
-// this SadTabController.
-- (content::WebContents*)webContents;
-
-@end
-
-#endif  // CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_SAD_TAB_CONTROLLER_H_