chrome/browser/resources/file_manager/foreground/js/error_counter.js

// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

'use strict';

/**
 * This variable is checked in SelectFileDialogExtensionBrowserTest.
 * @type {number}
 */
window.JSErrorCount = 0;

/**
 * Count uncaught exceptions.
 */
window.onerror = function() { window.JSErrorCount++; };