[Reland] Enable AutoResize for Constrained Web Dialogs for Mac.

chrome/browser/ui/cocoa/autofill/autofill_dialog_cocoa.h

 // Copyright (c) 2013 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_AUTOFILL_AUTOFILL_DIALOG_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_AUTOFILL_AUTOFILL_DIALOG_COCOA_H_
 
 #include "base/mac/scoped_nsobject.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/autofill/autofill_dialog_types.h"
 #include "chrome/browser/ui/autofill/autofill_dialog_view.h"
 #include "chrome/browser/ui/cocoa/constrained_window/constrained_window_mac.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace content {
 class NavigationController;
 }
 
@@ skipping 38 matching lines @@
 
   // Posts a close request on the current message loop.
   void PerformClose();
 
  private:
   friend class AutofillDialogViewTesterCocoa;
 
   // Closes the sheet and ends the modal loop. Triggers cleanup sequence.
   void CloseNow();
 
-  scoped_ptr<ConstrainedWindowMac> constrained_window_;
+  std::unique_ptr<ConstrainedWindowMac> constrained_window_;
   base::scoped_nsobject<AutofillDialogWindowController> sheet_delegate_;
 
   // The delegate |this| queries for logic and state.
   AutofillDialogViewDelegate* delegate_;
 
   // WeakPtrFactory for deferred close.
   base::WeakPtrFactory<AutofillDialogCocoa> close_weak_ptr_factory_;
 
 };
 
 }  // autofill
 
 #endif  // CHROME_BROWSER_UI_COCOA_AUTOFILL_AUTOFILL_DIALOG_COCOA_H_