diff --git a/policy_manager/policy.h b/policy_manager/policy.h
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--- /dev/null
+++ b/policy_manager/policy.h
@@ -0,0 +1,51 @@
+// Copyright (c) 2014 The Chromium OS 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 CHROMEOS_PLATFORM_UPDATE_ENGINE_POLICY_MANAGER_POLICY_H
+#define CHROMEOS_PLATFORM_UPDATE_ENGINE_POLICY_MANAGER_POLICY_H
+
+#include "update_engine/policy_manager/evaluation_context.h"
+
+namespace chromeos_policy_manager {
+
+// The three different results of a policy request.
+enum EvalStatus {
+  EvalStatusFailed,
+  EvalStatusSucceeded,
+  EvalStatusAskMeAgainLater,
+};
+
+// The Policy class is an interface to the ensemble of policy requests that the
+// client can make. A derived class includes the policy implementations of
+// these.
+//
+// When compile-time selection of the policy is required due to missing or extra
+// parts in a given platform, a different Policy subclass can be used.
+class Policy {
+ public:
+  virtual ~Policy() {}
+
+  // List of policy requests. A policy request takes an EvaluationContext as the
+  // first argument, a returned error message, a returned value and optionally
+  // followed by one or more arbitrary constant arguments.
+  //
+  // When the implementation fails, the method returns EvalStatusFailed and sets
+  // the |error| string.
+
+  // UpdateCheckAllowed returns whether it is allowed to request an update check
+  // to Omaha.
+  virtual EvalStatus UpdateCheckAllowed(EvaluationContext* ec,
+                                        std::string* error,
+                                        bool* result) const = 0;
+
+ protected:
+  Policy() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(Policy);
+};
+
+}  // namespace chromeos_policy_manager
+
+#endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_POLICY_MANAGER_POLICY_H