[ChromeOS] Always fetch oauth cooken when signing in via extension.

chrome/browser/chromeos/login/existing_user_controller.cc

Index: chrome/browser/chromeos/login/existing_user_controller.cc
diff --git a/chrome/browser/chromeos/login/existing_user_controller.cc b/chrome/browser/chromeos/login/existing_user_controller.cc
index 412ef8a1b85e06c23a4b87faf40dd9dd3e5c4d1c..c06b1a0cc5c6dfd00c2f67f0c68675dae378e1f0 100644
--- a/chrome/browser/chromeos/login/existing_user_controller.cc
+++ b/chrome/browser/chromeos/login/existing_user_controller.cc
@@ -344,6 +344,9 @@ void ExistingUserController::OnLoginSuccess(
 
   two_factor_credentials_ = credentials.two_factor;
 
+  bool has_cookies =
+      login_performer_->auth_mode() == LoginPerformer::AUTH_MODE_EXTENSION;
+
   // LoginPerformer instance will delete itself once online auth result is OK.
   // In case of failure it'll bring up ScreenLock and ask for
   // correct password/display error message.
@@ -359,6 +362,7 @@ void ExistingUserController::OnLoginSuccess(
                                     credentials,
                                     pending_requests,
                                     using_oauth,
+                                    has_cookies,
                                     this);