Allow re-enrollment to the same domain in case of policy data loss.

chrome/browser/chromeos/login/authenticator_unittest.cc

Index: chrome/browser/chromeos/login/authenticator_unittest.cc
diff --git a/chrome/browser/chromeos/login/authenticator_unittest.cc b/chrome/browser/chromeos/login/authenticator_unittest.cc
index aa9d8c52c05bafae87fa7263d9e4698f5c691dc9..0787df1aae4f8e7ddff9f493239ecc62102e2861 100644
--- a/chrome/browser/chromeos/login/authenticator_unittest.cc
+++ b/chrome/browser/chromeos/login/authenticator_unittest.cc
@@ -63,6 +63,18 @@ TEST(AuthenticatorTest, EmailAddressIgnoreMultiPlusSuffix) {
   EXPECT_EQ(multi_plus, Authenticator::Canonicalize(multi_plus));
 }
 
+TEST(AuthenticatorTest, CanonicalizeDomain) {
+  const char domain[] = "example.com";
+  EXPECT_EQ(domain, Authenticator::CanonicalizeDomain("example.com"));
+  EXPECT_EQ(domain, Authenticator::CanonicalizeDomain("EXAMPLE.cOm"));
+}
+
+TEST(AuthenticatorTest, ExtractDomainName) {
+  const char domain[] = "example.com";
+  EXPECT_EQ(domain, Authenticator::ExtractDomainName("who@example.com"));
+  EXPECT_EQ(domain, Authenticator::ExtractDomainName("who@EXAMPLE.cOm"));
+}
+
 TEST(AuthenticatorTest, SanitizeMissingDomain) {
   EXPECT_EQ("nodomain@gmail.com", Authenticator::Sanitize("nodomain"));
 }