Pref service: support for incognito prefs

services/preferences/public/cpp/preferences_struct_traits.cc

Index: services/preferences/public/cpp/preferences_struct_traits.cc
diff --git a/services/preferences/public/cpp/preferences_struct_traits.cc b/services/preferences/public/cpp/preferences_struct_traits.cc
index 4d22db121f9d7c87586cf9bf7f172eef3a871b45..cb97173b0b0218efd2e5e05eaf9bb40c3767a686 100644
--- a/services/preferences/public/cpp/preferences_struct_traits.cc
+++ b/services/preferences/public/cpp/preferences_struct_traits.cc
@@ -21,6 +21,8 @@ PrefStoreType EnumTraits<PrefStoreType, PrefValueStore::PrefStoreType>::ToMojom(
       return PrefStoreType::EXTENSION;
     case PrefValueStore::COMMAND_LINE_STORE:
       return PrefStoreType::COMMAND_LINE;
+    case PrefValueStore::INCOGNITO_STORE:
+      return PrefStoreType::INCOGNITO;
     case PrefValueStore::USER_STORE:
       return PrefStoreType::USER;
     case PrefValueStore::RECOMMENDED_STORE:
@@ -48,6 +50,9 @@ bool EnumTraits<PrefStoreType, PrefValueStore::PrefStoreType>::FromMojom(
     case PrefStoreType::COMMAND_LINE:
       *output = PrefValueStore::COMMAND_LINE_STORE;
       return true;
+    case PrefStoreType::INCOGNITO:
+      *output = PrefValueStore::INCOGNITO_STORE;
+      return true;
     case PrefStoreType::USER:
       *output = PrefValueStore::USER_STORE;
       return true;