Rename AccountId method GetGaiaIdKey() to GetAccountIdKey().

chromeos/cryptohome/cryptohome_parameters.h

Index: chromeos/cryptohome/cryptohome_parameters.h
diff --git a/chromeos/cryptohome/cryptohome_parameters.h b/chromeos/cryptohome/cryptohome_parameters.h
index d906600a11310ffaf59bd5f90a2bc1e76239db3b..dd96100832ce6926388b86aba3e8b6d7b60636a2 100644
--- a/chromeos/cryptohome/cryptohome_parameters.h
+++ b/chromeos/cryptohome/cryptohome_parameters.h
@@ -168,11 +168,11 @@ class CHROMEOS_EXPORT MountParameters {
 };
 
 // This function returns true if cryptohome of |account_id| is migrated to
-// gaiaId-based identifier (AccountId::GetGaiaIdKey()).
+// accountId-based identifier (AccountId::GetAccountIdKey()).
 bool GetGaiaIdMigrationStatus(const AccountId& account_id);
 
-// This function marks |account_id| cryptohome migrated to gaiaId-based
-// identifier (AccountId::GetGaiaIdKey()).
+// This function marks |account_id| cryptohome migrated to accountId-based
+// identifier (AccountId::GetAccountIdKey()).
 void SetGaiaIdMigrationStatusDone(const AccountId& account_id);
 
 }  // namespace cryptohome