Bug 1570330 - Make test_doorhanger_homepage_button (in browser_ext_chrome_settings_overrides_home.js) wait on page load before moving to next task. r=Gijs

Differential Revision: https://phabricator.services.mozilla.com/D43088

--HG--
extra : moz-landing-system : lando

browser/components/extensions/test/browser/browser_ext_chrome_settings_overrides_home.js

@@ -390,6 +390,8 @@ add_task(async function test_doorhanger_homepage_button() {
   await popupHidden;
   await prefPromise;
 
+  await BrowserTestUtils.waitForLocationChange(gBrowser, defaultHomePage);
+
   is(getHomePageURL(), defaultHomePage, "The homepage is set back to default");
 
   await ext1.unload();