Don't overwrite the refresh_token fetched by the policy_oauth_fetcher.

chrome/browser/chromeos/login/oauth2_login_manager.cc

Index: chrome/browser/chromeos/login/oauth2_login_manager.cc
diff --git a/chrome/browser/chromeos/login/oauth2_login_manager.cc b/chrome/browser/chromeos/login/oauth2_login_manager.cc
index 314708c3c5e70b6866850d7a8bd6299e29d356dd..ccc2034d3ff527ff80e0521073760161f9a61a57 100644
--- a/chrome/browser/chromeos/login/oauth2_login_manager.cc
+++ b/chrome/browser/chromeos/login/oauth2_login_manager.cc
@@ -149,7 +149,10 @@ void OAuth2LoginManager::Observe(
       TokenServiceFactory::GetForProfile(user_profile_);
   switch (type) {
     case chrome::NOTIFICATION_TOKEN_LOADING_FINISHED: {
-      refresh_token_ = token_service->GetOAuth2LoginRefreshToken();
+      if (restore_from_auth_cookies_ &&
+          !token_service->GetOAuth2LoginRefreshToken().empty()) {
+        refresh_token_ = token_service->GetOAuth2LoginRefreshToken();
+      }
       // TODO(zelidrag): Figure out why just getting GaiaConstants::kGaiaService

[zel, 2013/01/23 16:44:50]

nit: please remove this comment while you are here... GAIA token is per-session,
that's why we can't really cache it 

[Joao da Silva, 2013/01/23 16:50:37]

Done.

       // token does not do the trick here.
       RestoreSessionCookies();