When the user signs in, make sure to set cookies on all reachable google

chrome/browser/chromeos/login/signin/oauth2_login_verifier.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/login/signin/oauth2_login_verifier.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
@@ skipping 131 matching lines @@
                base::Bind(&Delegate::OnSessionMergeFailure,
                           base::Unretained(delegate_)));
 }
 
 void OAuth2LoginVerifier::StartMergeSession() {
   DCHECK(!gaia_token_.empty());
   gaia_fetcher_.reset(
       new GaiaAuthFetcher(this,
                           std::string(GaiaConstants::kChromeOSSource),
                           user_request_context_.get()));
-  gaia_fetcher_->StartMergeSession(gaia_token_);
+  gaia_fetcher_->StartMergeSession(gaia_token_, std::string());
 }
 
 void OAuth2LoginVerifier::OnMergeSessionSuccess(const std::string& data) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   VLOG(1) << "MergeSession successful.";
   delegate_->OnSessionMergeSuccess();
   // Schedule post-merge verification to analyze how many LSID/SID overruns
   // were created by the session restore.
   SchedulePostMergeVerification();
 }
@@ skipping 100 matching lines @@
                << operation_id;
   UMA_HISTOGRAM_ENUMERATION(
       base::StringPrintf("OAuth2Login.%sFailure", operation_id),
       error.state(),
       GoogleServiceAuthError::NUM_STATES);
 
   error_handler.Run(IsConnectionOrServiceError(error));
 }
 
 }  // namespace chromeos