Add policy domain for signin screen apps

components/policy/core/common/schema_registry_unittest.cc

Index: components/policy/core/common/schema_registry_unittest.cc
diff --git a/components/policy/core/common/schema_registry_unittest.cc b/components/policy/core/common/schema_registry_unittest.cc
index 3d53d96295b34d2b93d97821b7595b4c0584a95d..426e84a815669af07353992319fff7d94b7ab355 100644
--- a/components/policy/core/common/schema_registry_unittest.cc
+++ b/components/policy/core/common/schema_registry_unittest.cc
@@ -117,6 +117,7 @@ TEST(SchemaRegistryTest, IsReady) {
 #if defined(ENABLE_EXTENSIONS)
   EXPECT_CALL(observer, OnSchemaRegistryReady()).Times(0);
   registry.SetReady(POLICY_DOMAIN_EXTENSIONS);
+  registry.SetReady(POLICY_DOMAIN_SIGNIN_EXTENSIONS);
   Mock::VerifyAndClearExpectations(&observer);
   EXPECT_FALSE(registry.IsReady());
 #endif
@@ -274,6 +275,7 @@ TEST(SchemaRegistryTest, ForwardingSchemaRegistry) {
   EXPECT_FALSE(forwarding.IsReady());
 
   registry->SetReady(POLICY_DOMAIN_EXTENSIONS);
+  registry->SetReady(POLICY_DOMAIN_SIGNIN_EXTENSIONS);
   EXPECT_FALSE(registry->IsReady());
   EXPECT_FALSE(forwarding.IsReady());
 
@@ -287,6 +289,7 @@ TEST(SchemaRegistryTest, ForwardingSchemaRegistry) {
   Mock::VerifyAndClearExpectations(&observer);
 
   forwarding.SetReady(POLICY_DOMAIN_EXTENSIONS);
+  forwarding.SetReady(POLICY_DOMAIN_SIGNIN_EXTENSIONS);
   EXPECT_FALSE(forwarding.IsReady());
   Mock::VerifyAndClearExpectations(&observer);