Replace deprecated base::NonThreadSafe in components/policy in favor of SequenceChecker.

components/policy/core/common/cloud/component_cloud_policy_service.h

 // 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.
 
 #ifndef COMPONENTS_POLICY_CORE_COMMON_CLOUD_COMPONENT_CLOUD_POLICY_SERVICE_H_
 #define COMPONENTS_POLICY_CORE_COMMON_CLOUD_COMPONENT_CLOUD_POLICY_SERVICE_H_
 
 #include <memory>
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "build/build_config.h"
 #include "components/policy/core/common/cloud/cloud_policy_client.h"
 #include "components/policy/core/common/cloud/cloud_policy_core.h"
 #include "components/policy/core/common/cloud/cloud_policy_store.h"
 #include "components/policy/core/common/policy_bundle.h"
 #include "components/policy/core/common/policy_namespace.h"
 #include "components/policy/core/common/schema_registry.h"
 #include "components/policy/policy_export.h"
 
 namespace base {
@@ skipping 19 matching lines @@
 // downloaded and cached, regardless of the current state of the schema
 // registry. However, exposed are only the policies whose components are present
 // in the schema registry.
 //
 // The exposed policies are guaranteed to be conformant to the corresponding
 // schemas. Values that do not pass validation against the schema are dropped.
 class POLICY_EXPORT ComponentCloudPolicyService
     : public CloudPolicyClient::Observer,
       public CloudPolicyCore::Observer,
       public CloudPolicyStore::Observer,
-      public SchemaRegistry::Observer,
-      public base::NonThreadSafe {
+      public SchemaRegistry::Observer {
  public:
   class POLICY_EXPORT Delegate {
    public:
     virtual ~Delegate();
 
     // Invoked whenever the policy served by policy() changes. This is also
     // invoked for the first time once the backend is initialized, and
     // is_initialized() becomes true.
     virtual void OnComponentCloudPolicyUpdated() = 0;
   };
@@ skipping 114 matching lines @@
   // filtered and validated by the |current_schema_map_|.
   std::unique_ptr<PolicyBundle> unfiltered_policy_;
 
   // Contains all the current policies for components, filtered and validated by
   // the |current_schema_map_|.
   PolicyBundle policy_;
 
   // Whether policies are being served.
   bool policy_installed_ = false;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   // Must be the last member.
   base::WeakPtrFactory<ComponentCloudPolicyService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ComponentCloudPolicyService);
 };
 
 }  // namespace policy
 
 #endif  // COMPONENTS_POLICY_CORE_COMMON_CLOUD_COMPONENT_CLOUD_POLICY_SERVICE_H_