Revert of MacViews: Allow the toolkit-views Enterprise Signin Confirmation Dialog to be used

chrome/browser/ui/cocoa/profiles/profile_signin_confirmation_dialog_cocoa.h

 // Copyright 2014 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_PROFILES_PROFILE_SIGNIN_CONFIRMATION_DIALOG_COCOA_
 #define CHROME_BROWSER_UI_COCOA_PROFILES_PROFILE_SIGNIN_CONFIRMATION_DIALOG_COCOA_
 
 #import <Cocoa/Cocoa.h>
 
 #include <memory>
@@ skipping 20 matching lines @@
 
 // A constrained dialog that confirms Chrome sign-in for enterprise users.
 class ProfileSigninConfirmationDialogCocoa : ConstrainedWindowMacDelegate {
  public:
   // Creates and shows the dialog, which owns itself.
   ProfileSigninConfirmationDialogCocoa(
       Browser* browser,
       content::WebContents* web_contents,
       Profile* profile,
       const std::string& username,
-      std::unique_ptr<ui::ProfileSigninConfirmationDelegate> delegate,
+      ui::ProfileSigninConfirmationDelegate* delegate,
       bool offer_profile_creation);
   virtual ~ProfileSigninConfirmationDialogCocoa();
 
   // Shows the dialog if needed.
-  static void Show(
-      Browser* browser,
-      content::WebContents* web_contents,
-      Profile* profile,
-      const std::string& username,
-      std::unique_ptr<ui::ProfileSigninConfirmationDelegate> delegate);
+  static void Show(Browser* browser,
+                   content::WebContents* web_contents,
+                   Profile* profile,
+                   const std::string& username,
+                   ui::ProfileSigninConfirmationDelegate* delegate);
 
   // Closes the dialog, which deletes itself.
   void Close();
 
  private:
   // ConstrainedWindowMacDelegate:
   void OnConstrainedWindowClosed(ConstrainedWindowMac* window) override;
 
   // Controller for the dialog view.
   base::scoped_nsobject<ProfileSigninConfirmationViewController> controller_;
 
   // The constrained window that contains the dialog view.
   std::unique_ptr<ConstrainedWindowMac> window_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileSigninConfirmationDialogCocoa);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_PROFILES_PROFILE_SIGNIN_CONFIRMATION_DIALOG_COCOA_