Implement new-style CloudPolicyStore for Chrome OS device policy.

chrome/browser/policy/device_policy_decoder_chromeos.h

+// 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.
+
+#ifndef CHROME_BROWSER_POLICY_DEVICE_POLICY_DECODER_CHROMEOS_H_
+#define CHROME_BROWSER_POLICY_DEVICE_POLICY_DECODER_CHROMEOS_H_
+
+namespace enterprise_management {
+class ChromeDeviceSettingsProto;
+}
+
+namespace policy {
+
+class EnterpriseInstallAttributes;
+class PolicyMap;
+
+// Decodes device policy in ChromeDeviceSettingsProto representation into the a
+// PolicyMap.
+void DecodeDevicePolicy(
+    const enterprise_management::ChromeDeviceSettingsProto& policy,
+    PolicyMap* policies,
+    EnterpriseInstallAttributes* install_attributes);
+
+}  // namespace policy
+
+#endif  // CHROME_BROWSER_POLICY_DEVICE_POLICY_DECODER_CHROMEOS_H_