Don't throw "completed" exception

chrome/renderer/resources/extensions/test_custom_bindings.js

 // Copyright (c) 2012 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.
 
 // test_custom_bindings.js
 // mini-framework for ExtensionApiTest browser tests
 
 var binding = require('binding').Binding.create('test');
 
 var chrome = requireNative('chrome').GetChrome();
@@ skipping 28 matching lines @@
     setTimeout(chromeTest.runNextTest, 0);
   }
 
   function allTestsDone() {
     if (testsFailed == 0) {
       chromeTest.notifyPass();
     } else {
       chromeTest.notifyFail('Failed ' + testsFailed + ' of ' +
                              testCount + ' tests');
     }
-
-    // Try to get the script to stop running immediately.
-    // This isn't an error, just an attempt at saying "done".
-    throw "completed";
   }
 
   var pendingCallbacks = 0;
 
   apiFunctions.setHandleRequest('callbackAdded', function() {
     pendingCallbacks++;
 
     var called = null;
     return function() {
       if (called != null) {
@@ skipping 285 matching lines @@
     return userGestures.RunWithoutUserGesture(callback);
   });
 
   apiFunctions.setHandleRequest('setExceptionHandler', function(callback) {
     chromeTest.assertEq(typeof(callback), 'function');
     uncaughtExceptionHandler.setHandler(callback);
   });
 });
 
 exports.binding = binding.generate();