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

chrome/browser/chromeos/policy/login_policy_test_base.h

 // Copyright 2015 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_CHROMEOS_POLICY_LOGIN_POLICY_TEST_BASE_H_
 #define CHROME_BROWSER_CHROMEOS_POLICY_LOGIN_POLICY_TEST_BASE_H_
 
+#include <memory>
 #include <string>
 
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chromeos/login/test/oobe_base_test.h"
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace policy {
 
 class UserPolicyTestHelper;
 
@@ skipping 19 matching lines @@
   void SkipToLoginScreen();
   void LogIn(const std::string& user_id, const std::string& password);
 
   static const char kAccountPassword[];
   static const char kAccountId[];
 
  private:
   void SetUpGaiaServerWithAccessTokens();
   void SetMergeSessionParams();
 
-  scoped_ptr<UserPolicyTestHelper> user_policy_helper_;
+  std::unique_ptr<UserPolicyTestHelper> user_policy_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginPolicyTestBase);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_CHROMEOS_POLICY_LOGIN_POLICY_TEST_BASE_H_