Add ScopedStubEnterpriseInstallAttributes for tests to set test install attributes.

chrome/browser/chromeos/policy/stub_enterprise_install_attributes.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 CHROME_BROWSER_CHROMEOS_POLICY_STUB_ENTERPRISE_INSTALL_ATTRIBUTES_H_
 #define CHROME_BROWSER_CHROMEOS_POLICY_STUB_ENTERPRISE_INSTALL_ATTRIBUTES_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 11 matching lines @@
 
   void SetDomain(const std::string& domain);
   void SetRegistrationUser(const std::string& user);
   void SetDeviceId(const std::string& id);
   void SetMode(DeviceMode mode);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(StubEnterpriseInstallAttributes);
 };
 
+// Helper class to set enterprise install attributes in the scope of a test.
+// Note: The install attributes cannot be removed once set, so the instance sets
+// the attributes on construction, but does not remove them on destruction.
+class ScopedStubEnterpriseInstallAttributes {
+ public:
+  ScopedStubEnterpriseInstallAttributes(const std::string& domain,
+                                        const std::string& registration_user,
+                                        const std::string& device_id,
+                                        DeviceMode mode);
+};
+
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_CHROMEOS_POLICY_STUB_ENTERPRISE_INSTALL_ATTRIBUTES_H_