Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/cocoa/infobars/alternate_nav_infobar_controller.mm

 // Copyright 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.
 
 #import "chrome/browser/ui/cocoa/infobars/alternate_nav_infobar_controller.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 45 matching lines @@
       ui::WindowOpenDispositionFromNSEvent([NSApp currentEvent]);
   AlternateNavInfoBarDelegate* delegate =
       static_cast<AlternateNavInfoBarDelegate*>([self delegate]);
   if (delegate->LinkClicked(disposition))
     [self removeSelf];
 }
 
 @end
 
 // static
-scoped_ptr<infobars::InfoBar> AlternateNavInfoBarDelegate::CreateInfoBar(
-    scoped_ptr<AlternateNavInfoBarDelegate> delegate) {
-  scoped_ptr<InfoBarCocoa> infobar(new InfoBarCocoa(std::move(delegate)));
+std::unique_ptr<infobars::InfoBar> AlternateNavInfoBarDelegate::CreateInfoBar(
+    std::unique_ptr<AlternateNavInfoBarDelegate> delegate) {
+  std::unique_ptr<InfoBarCocoa> infobar(new InfoBarCocoa(std::move(delegate)));
   base::scoped_nsobject<AlternateNavInfoBarController> controller(
       [[AlternateNavInfoBarController alloc] initWithInfoBar:infobar.get()]);
   infobar->set_controller(controller);
   return std::move(infobar);
 }