Allow explicitly whitelisted apps/extensions in public sessions

chrome/browser/chromeos/extensions/device_local_account_management_policy_provider.h

+// Copyright 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 CHROME_BROWSER_CHROMEOS_EXTENSIONS_DEVICE_LOCAL_ACCOUNT_MANAGEMENT_POLICY_PROVIDER_H_
+#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_DEVICE_LOCAL_ACCOUNT_MANAGEMENT_POLICY_PROVIDER_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "chrome/browser/extensions/management_policy.h"
+
+namespace chromeos {
+
+// A managed policy for device-local accounts that ensures only extensions whose
+// type or ID has been whitelisted for use in device-local accounts can be
+// installed.
+class DeviceLocalAccountManagementPolicyProvider
+    : public extensions::ManagementPolicy::Provider {
+ public:
+  DeviceLocalAccountManagementPolicyProvider();
+  virtual ~DeviceLocalAccountManagementPolicyProvider();
+
+  // extensions::ManagementPolicy::Provider:
+  virtual std::string GetDebugPolicyProviderName() const OVERRIDE;
+  virtual bool UserMayLoad(const extensions::Extension* extension,
+                           string16* error) const OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(DeviceLocalAccountManagementPolicyProvider);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_DEVICE_LOCAL_ACCOUNT_MANAGEMENT_POLICY_PROVIDER_H_