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

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <vector>
@@ skipping 1258 matching lines @@
     const std::string& locale) {
   GetKeyboardLayoutsForLocale(
       base::Bind(&SigninScreenHandler::SendPublicSessionKeyboardLayouts,
                  weak_factory_.GetWeakPtr(), account_id, locale),
       locale);
 }
 
 void SigninScreenHandler::SendPublicSessionKeyboardLayouts(
     const AccountId& account_id,
     const std::string& locale,
-    scoped_ptr<base::ListValue> keyboard_layouts) {
+    std::unique_ptr<base::ListValue> keyboard_layouts) {
   CallJS("login.AccountPickerScreen.setPublicSessionKeyboardLayouts",
          account_id, locale, *keyboard_layouts);
 }
 
 void SigninScreenHandler::HandleLaunchKioskApp(const AccountId& app_account_id,
                                                bool diagnostic_mode) {
   UserContext context(user_manager::USER_TYPE_KIOSK_APP, app_account_id);
   SigninSpecifics specifics;
   specifics.kiosk_diagnostic_mode = diagnostic_mode;
   if (delegate_)
@@ skipping 126 matching lines @@
 }
 
 void SigninScreenHandler::OnFeedbackFinished() {
   CallJS("login.UnrecoverableCryptohomeErrorScreen.resumeAfterFeedbackUI");
 
   // Recreate user's cryptohome after the feedkback is attempted.
   HandleResyncUserData();
 }
 
 }  // namespace chromeos