Add policy domain for signin screen apps

components/policy/core/common/policy_test_utils.cc

 // 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.
 
 #include "components/policy/core/common/policy_test_utils.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 185 matching lines @@
 std::ostream& operator<<(std::ostream& os, policy::PolicyDomain domain) {
   switch (domain) {
     case policy::POLICY_DOMAIN_CHROME: {
       os << "POLICY_DOMAIN_CHROME";
       break;
     }
     case policy::POLICY_DOMAIN_EXTENSIONS: {
       os << "POLICY_DOMAIN_EXTENSIONS";
       break;
     }
+    case policy::POLICY_DOMAIN_SIGNIN_EXTENSIONS: {
+      os << "POLICY_DOMAIN_SIGNIN_EXTENSIONS";
+      break;
+    }
     default: {
       os << "POLICY_DOMAIN_UNKNOWN(" << int(domain) << ")";
     }
   }
   return os;
 }
 
 std::ostream& operator<<(std::ostream& os, const policy::PolicyMap& policies) {
   os << "{" << std::endl;
   for (policy::PolicyMap::const_iterator iter = policies.begin();
@@ skipping 13 matching lines @@
      << "  \"scope\": " << e.scope << "," << std::endl
      << "  \"value\": " << value
      << "}";
   return os;
 }
 
 std::ostream& operator<<(std::ostream& os, const policy::PolicyNamespace& ns) {
   os << ns.domain << "/" << ns.component_id;
   return os;
 }