Implement bump-scroll browser-test.

remoting/webapp/browser_test/browser_test.js

 // Copyright 2014 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.
 
 /**
  * @fileoverview
  * @suppress {checkTypes}  By default, JSCompile is not run on test files.
  *    However, you can modify |remoting_webapp_files.gypi| locally to include
  *    the test in the package to expedite local development.  This suppress
  *    is here so that JSCompile won't complain.
@@ skipping 306 matching lines @@
       browserTest.clickOnControl('change-daemon-pin');
     }
     return browserTest.setupPIN(pin);
   });
 };
 
 // Called by Browser Test in C++
 browserTest.ensureRemoteConnectionEnabled = function(pin) {
   browserTest.ensureHostStartedWithPIN(pin).then(function(){
     browserTest.automationController_.send(true);
-  }).catch(function(errorMessage){
+  }, function(errorMessage){
     console.error(errorMessage);
     browserTest.automationController_.send(false);
   });
 };
 
 browserTest.init();