Fix args size check in HandleCompleteLoginMessageWithCookies

TBR=xiyuan@chromium.org

Bug: 1043108
Change-Id: Icbed69edd08040f2d92d91811b14361b2db93c42
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2132130Reviewed-by: Anastasiia Nikolaienko <anastasiian@chromium.org>
Reviewed-by: Kush Sinha <sinhak@chromium.org>
Commit-Queue: Anastasiia Nikolaienko <anastasiian@chromium.org>
Cr-Commit-Position: refs/heads/master@{#755349}

chrome/browser/ui/webui/signin/inline_login_handler.cc

@@ -195,7 +195,7 @@ void InlineLoginHandler::HandleCompleteLoginMessageWithCookies(
       dict.FindBoolKey("chooseWhatToSync").value_or(false);
 
   base::Value edu_login_params;
-  if (args.GetList().size() > 0) {
+  if (args.GetList().size() > 1) {
     edu_login_params = args.GetList()[1].Clone();
   }