Compile chrome://settings, part 4: 149 proper errors left

chrome/browser/resources/options/startup_overlay.js

Index: chrome/browser/resources/options/startup_overlay.js
diff --git a/chrome/browser/resources/options/startup_overlay.js b/chrome/browser/resources/options/startup_overlay.js
index 0eb54cb90b9bd9967ec6a6c9fa10a8d69fffe0d8..3784f0e3efa9e286a77c86f73f329502c83227bd 100644
--- a/chrome/browser/resources/options/startup_overlay.js
+++ b/chrome/browser/resources/options/startup_overlay.js
@@ -14,10 +14,10 @@ cr.define('options', function() {
    */
   function StartupOverlay() {
     SettingsDialog.call(this, 'startup',
-                        loadTimeData.getString('startupPagesOverlayTabTitle'),
-                        'startup-overlay',
-                        $('startup-overlay-confirm'),
-                        $('startup-overlay-cancel'));
+        loadTimeData.getString('startupPagesOverlayTabTitle'),
+        'startup-overlay',
+        assertInstanceof($('startup-overlay-confirm'), HTMLInputElement),
+        assertInstanceof($('startup-overlay-cancel'), HTMLInputElement));
   };
 
   cr.addSingletonGetter(StartupOverlay);