Fix one more instance of scoped_ptr<T>(NULL) on ChromeOS.

chrome/browser/chromeos/policy/device_local_account_browsertest.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 <map>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 112 matching lines @@
     base::MessageLoop::current()->PostTask(FROM_HERE,
                                            base::Bind(&chrome::AttemptExit));
     base::RunLoop().RunUntilIdle();
   }
 
   void RemoveOwnerPrivateKeyFromPolicyBuilders() {
     // Any instances of the private half of the owner key held by policy
     // builders must be dropped as otherwise the NSS library will tell Chrome
     // that the key is available - which is incorrect and leads to Chrome
     // behaving as if a local owner were logged in.
-    device_policy()->set_signing_key(scoped_ptr<crypto::RSAPrivateKey>(NULL));
-    device_policy()->set_new_signing_key(
-        scoped_ptr<crypto::RSAPrivateKey>(NULL));
+    device_policy()->set_signing_key(scoped_ptr<crypto::RSAPrivateKey>());
+    device_policy()->set_new_signing_key(scoped_ptr<crypto::RSAPrivateKey>());
     device_local_account_policy_.set_signing_key(
-        scoped_ptr<crypto::RSAPrivateKey>(NULL));
+        scoped_ptr<crypto::RSAPrivateKey>());
     device_local_account_policy_.set_new_signing_key(
-        scoped_ptr<crypto::RSAPrivateKey>(NULL));
+        scoped_ptr<crypto::RSAPrivateKey>());
   }
 
   void InitializePolicy() {
     device_policy()->policy_data().set_public_key_version(1);
     em::ChromeDeviceSettingsProto& proto(device_policy()->payload());
     proto.mutable_show_user_names()->set_show_user_names(true);
 
     device_local_account_policy_.policy_data().set_policy_type(
         dm_protocol::kChromePublicAccountPolicyType);
     device_local_account_policy_.policy_data().set_username(kAccountId1);
@@ skipping 235 matching lines @@
   // Verify that the Terms of Service screen is being shown.
   chromeos::WizardController* wizard_controller =
         chromeos::WizardController::default_controller();
   ASSERT_TRUE(wizard_controller);
   ASSERT_TRUE(wizard_controller->current_screen());
   EXPECT_EQ(chromeos::WizardController::kTermsOfServiceScreenName,
             wizard_controller->current_screen()->GetName());
 }
 
 }  // namespace policy