Implement a policy to autologin a public account.

chrome/browser/chromeos/policy/device_local_account_policy_store.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/chromeos/policy/device_local_account_policy_store.h"
 
 #include "base/bind.h"
 #include "base/values.h"
 #include "chrome/browser/policy/cloud/device_management_service.h"
 #include "chrome/browser/policy/cloud/proto/device_management_backend.pb.h"
@@ skipping 132 matching lines @@
 }
 
 void DeviceLocalAccountPolicyStore::Validate(
     scoped_ptr<em::PolicyFetchResponse> policy_response,
     const UserCloudPolicyValidator::CompletionCallback& callback,
     chromeos::DeviceSettingsService::OwnershipStatus ownership_status,
     bool is_owner) {
   DCHECK_NE(chromeos::DeviceSettingsService::OWNERSHIP_UNKNOWN,
             ownership_status);
   chromeos::OwnerKey* key = device_settings_service_->GetOwnerKey();
-  if (!key->public_key()) {
+  if (!key || !key->public_key()) {
     status_ = CloudPolicyStore::STATUS_BAD_STATE;
     NotifyStoreLoaded();
     return;
   }
 
   scoped_ptr<UserCloudPolicyValidator> validator(
       UserCloudPolicyValidator::Create(policy_response.Pass()));
   validator->ValidateUsername(account_id_);
   validator->ValidatePolicyType(dm_protocol::kChromePublicAccountPolicyType);
   validator->ValidateAgainstCurrentPolicy(
       policy(),
       CloudPolicyValidatorBase::TIMESTAMP_REQUIRED,
       CloudPolicyValidatorBase::DM_TOKEN_REQUIRED);
   validator->ValidatePayload();
   validator->ValidateSignature(*key->public_key(), false);
   validator.release()->StartValidation(callback);
 }
 
 }  // namespace policy