[FedCM] Modifying function to reduce timeout (#53701)

Modified fedcm_get_and_select_first_account() to reduce timeout.

Bug: 41482163
Change-Id: Ibeb065dc0c6df63efc9be8544fc65e15667d98aa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6723950
Reviewed-by: Christian Biesinger <[email protected]>
Reviewed-by: Nicolás Peña <[email protected]>
Commit-Queue: Nicolás Peña <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1485156}

Co-authored-by: jaimukund <[email protected]>

Author: chromium-wpt-export-bot

fedcm/support/fedcm-helper.sub.js

@@ -239,9 +239,15 @@ export async function fedcm_select_account_promise(t, account_index) {
   await window.test_driver.select_fedcm_account(account_index);
 }
 
-export function fedcm_get_and_select_first_account(t, options) {
+export async function fedcm_get_and_select_first_account(t, options) {
   const credentialPromise = navigator.credentials.get(options);
-  fedcm_select_account_promise(t, 0);
+  let type = await fedcm_expect_dialog(
+    credentialPromise,
+    fedcm_get_dialog_type_promise(t)
+  );
+  if (type != "AccountChooser")
+    throw "Incorrect dialog type: " + type;
+  await window.test_driver.select_fedcm_account(0);
   return credentialPromise;
 }