Bug 1555893 - The what's new page test should only run when building with MOZ_UPDATER. r=bytesized

Also fixes an indentation issue in browser_whats_new_page.js

Differential Revision: https://phabricator.services.mozilla.com/D33248

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

browser/components/moz.build

@@ -92,9 +92,13 @@ EXTRA_JS_MODULES += [
 BROWSER_CHROME_MANIFESTS += [
     'safebrowsing/content/test/browser.ini',
     'tests/browser/browser.ini',
-    'tests/browser/whats_new_page/browser.ini'
 ]
 
+if CONFIG['MOZ_UPDATER']:
+    BROWSER_CHROME_MANIFESTS += [
+        'tests/browser/whats_new_page/browser.ini',
+    ]
+
 XPCSHELL_TESTS_MANIFESTS += [
     'tests/unit/xpcshell.ini'
 ]

browser/components/tests/browser/whats_new_page/browser_whats_new_page.js

@@ -23,7 +23,7 @@ add_task(async function whats_new_page() {
      gBrowser.selectedBrowser.currentURI.spec == "https://example.com/"),
     "Waiting for the expected page to reopen");
   is(gBrowser.selectedBrowser.currentURI.spec, "https://example.com/",
-           "The what's new page's url should equal https://example.com/");
+     "The what's new page's url should equal https://example.com/");
   gBrowser.removeTab(gBrowser.selectedTab);
 
   // Leave no trace. Since this test modifies its support files put them back in