suppress user/password dialog when re-enabling sync

chrome/browser/signin/signin_tracker_unittest.cc

Index: chrome/browser/signin/signin_tracker_unittest.cc
diff --git a/chrome/browser/signin/signin_tracker_unittest.cc b/chrome/browser/signin/signin_tracker_unittest.cc
index 8ae1235ff44f306114af8f402a1475da30bb5e44..fd4470f04a44f30106a7c7051be469973b1c569d 100644
--- a/chrome/browser/signin/signin_tracker_unittest.cc
+++ b/chrome/browser/signin/signin_tracker_unittest.cc
@@ -226,6 +226,7 @@ TEST_F(SigninTrackerTest, NoGaiaSigninWhenServicesNotRunning) {
       content::Details<const GoogleServiceSigninSuccessDetails>(&details));
 }
 
+#if !defined(OS_CHROMEOS)
 TEST_F(SigninTrackerTest, GaiaSigninAfterSyncStarts) {
   // Make sure that we don't get a SigninSuccess() callback until after the
   // sync service reports that it's signed in.
@@ -273,4 +274,4 @@ TEST_F(SigninTrackerTest, SyncSigninError) {
   EXPECT_CALL(observer_, SigninFailed(error));
   tracker_->OnStateChanged();
 }
-
+#endif  // !OS_CHROMEOS