Use a distinct source parameter on gaia endpoints for the reconcilor.

chrome/browser/ui/auto_login_infobar_delegate.cc

Index: chrome/browser/ui/auto_login_infobar_delegate.cc
diff --git a/chrome/browser/ui/auto_login_infobar_delegate.cc b/chrome/browser/ui/auto_login_infobar_delegate.cc
index 18bc3fa43bdbf698171adf84cb08a09cac68e416..f1db5b8755c692b941e97f84632330fae3d037b0 100644
--- a/chrome/browser/ui/auto_login_infobar_delegate.cc
+++ b/chrome/browser/ui/auto_login_infobar_delegate.cc
@@ -87,6 +87,7 @@ AutoLoginRedirector::AutoLoginRedirector(
       SigninManagerFactory::GetInstance()->GetForProfile(profile);
   ubertoken_fetcher_.reset(new UbertokenFetcher(token_service,
                                                 this,
+                                                GaiaConstants::kChromeSource,
                                                 profile->GetRequestContext()));
   ubertoken_fetcher_->StartFetchingToken(
       signin_manager->GetAuthenticatedAccountId());