No need to support dasher domains.

google_apis/gaia/gaia_auth_util_unittest.cc

Index: google_apis/gaia/gaia_auth_util_unittest.cc
diff --git a/google_apis/gaia/gaia_auth_util_unittest.cc b/google_apis/gaia/gaia_auth_util_unittest.cc
index 5a60ebc1d3525333bef3b997dc1a228895dcdeff..388d87d233e89f2b964a5f772ea761bcf4fed5e6 100644
--- a/google_apis/gaia/gaia_auth_util_unittest.cc
+++ b/google_apis/gaia/gaia_auth_util_unittest.cc
@@ -88,11 +88,11 @@ TEST(GaiaAuthUtilTest, SanitizeExistingDomain) {
 TEST(GaiaAuthUtilTest, IsGaiaSignonRealm) {
   // Only https versions of Gaia URLs should be considered valid.
   EXPECT_TRUE(IsGaiaSignonRealm(GURL("https://accounts.google.com/")));
-  EXPECT_TRUE(IsGaiaSignonRealm(GURL("https://www.google.com/")));
   EXPECT_FALSE(IsGaiaSignonRealm(GURL("http://accounts.google.com/")));
-  EXPECT_FALSE(IsGaiaSignonRealm(GURL("http://www.google.com/")));
 
   // Other Google URLs are not valid.
+  EXPECT_FALSE(IsGaiaSignonRealm(GURL("https://www.google.com/")));
+  EXPECT_FALSE(IsGaiaSignonRealm(GURL("http://www.google.com/")));
   EXPECT_FALSE(IsGaiaSignonRealm(GURL("https://google.com/")));
   EXPECT_FALSE(IsGaiaSignonRealm(GURL("https://mail.google.com/")));