ChromeOS: should send old user GAPS cookie to GAIA on user reauthentication.

chrome/browser/chromeos/login/existing_user_controller.cc

 // Copyright (c) 2012 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/existing_user_controller.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 1116 matching lines @@
       user_manager::UserManager::Get()->GetKnownUserDeviceId(
           user_context.GetUserID());
   if (device_id.empty()) {
     bool is_ephemeral =
         ChromeUserManager::Get()->AreEphemeralUsersEnabled() &&
         user_context.GetUserID() != ChromeUserManager::Get()->GetOwnerEmail();
     device_id = ChromeSigninClient::GenerateSigninScopedDeviceID(is_ephemeral);
   }
   user_context.SetDeviceId(device_id);
 
+  const std::string& gaps_cookie = user_context.GetGAPSCookie();
+  if (!gaps_cookie.empty()) {
+    user_manager::UserManager::Get()->SetKnownUserGAPSCookie(
+        user_context.GetUserID(), gaps_cookie);
+  }
+
   PerformPreLoginActions(user_context);
 
   if (!time_init_.is_null()) {
     base::TimeDelta delta = base::Time::Now() - time_init_;
     UMA_HISTOGRAM_MEDIUM_TIMES("Login.PromptToCompleteLoginTime", delta);
     time_init_ = base::Time();  // Reset to null.
   }
 
   host_->OnCompleteLogin();
 
@@ skipping 101 matching lines @@
   if (!success) {
     LOG(ERROR) << "OAuth2 token fetch failed.";
     OnAuthFailure(AuthFailure(AuthFailure::FAILED_TO_INITIALIZE_TOKEN));
     return;
   }
   UserSessionManager::GetInstance()->OnOAuth2TokensFetched(user_context);
   PerformLogin(user_context, LoginPerformer::AUTH_MODE_EXTENSION);
 }
 
 }  // namespace chromeos