Add ManagementMode enum and GetManagementMode().

chrome/browser/chromeos/policy/policy_util.h

Index: chrome/browser/chromeos/policy/policy_util.h
diff --git a/chrome/browser/chromeos/policy/policy_util.h b/chrome/browser/chromeos/policy/policy_util.h
new file mode 100644
index 0000000000000000000000000000000000000000..6cef3b06767161d67a82b2a897324c50b57396de
--- /dev/null
+++ b/chrome/browser/chromeos/policy/policy_util.h
@@ -0,0 +1,20 @@
+// Copyright 2014 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_CHROMEOS_POLICY_POLICY_UTIL_H_
+#define CHROME_BROWSER_CHROMEOS_POLICY_POLICY_UTIL_H_
+
+#include "policy/proto/device_management_backend.pb.h"
+
+namespace policy {
+
+// If |management_mode| is set in |policy_data|, it simply returns it. For
+// legacy policy data which don't have |management_mode|, it checks if
+// |request_token| is set and returns a mode for backward-compatiblity.
+enterprise_management::PolicyData::ManagementMode
+GetManagementMode(const enterprise_management::PolicyData& policy_data);

[Mattias Nissler (ping if slow), 2014/11/27 08:37:31]

Two suggestions:
1. I think moving this over to cloud_policy_constants.h would be better. This
isn't a constant of course, but that file already contains similar helpers, so
people would look there I guess.
2. Using the fully-qualified ManagementMode type from the proto is rather
unwieldy - how about putting an alias / copy in cloud_policy_constants, so I can
just write MANAGEMENT_MODE_LOCAL_OWNER within the policy namespace?

[davidyu, 2014/11/27 10:04:08]

Ok. I added a new enum. I also refactored EnrollmentHandlerChromeOS to use this
new enum.

+
+}  // namespace policy
+
+#endif  // CHROME_BROWSER_CHROMEOS_POLICY_POLICY_UTIL_H_