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

chrome/browser/ui/cocoa/passwords/auto_signin_view_controller.mm

 // 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.
 
 #include <algorithm>
 
 #import "chrome/browser/ui/cocoa/passwords/auto_signin_view_controller.h"
 
 #include "base/mac/bind_objc_block.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 11 matching lines @@
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/font_list.h"
 
 namespace {
 const int kAutoSigninToastTimeoutSeconds = 3;
 }  // namespace
 
 @interface AutoSigninViewController () {
   base::scoped_nsobject<CredentialItemButton> credentialView_;
   base::scoped_nsobject<AccountAvatarFetcherManager> avatarManager_;
-  scoped_ptr<base::Timer> timer_;
+  std::unique_ptr<base::Timer> timer_;
 }
 - (instancetype)
 initWithAvatarManager:(AccountAvatarFetcherManager*)avatarManager
              delegate:(id<BasePasswordsContentViewDelegate>)delegate;
 @end
 
 @implementation AutoSigninViewController
 
 - (instancetype)initWithDelegate:
     (id<BasePasswordsContentViewDelegate>)delegate {
@@ skipping 40 matching lines @@
                         forView:credentialView_];
   }
   [credentialView_ sizeToFit];
   NSRect frame = [credentialView_ frame];
   frame.size.height += 2 * kVerticalAvatarMargin;
   [credentialView_ setFrame:frame];
   [self setView:credentialView_];
 }
 
 @end