Change Get started to Check eligibility in the promo banner in Files.app.

chrome/browser/resources/file_manager/js/mock_chrome.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.
 
 function MockEventSource() {
   this.listeners_ = [];
 }
 
 /**
  * Add a listener.
@@ skipping 602 matching lines @@
       DRIVE_WELCOME_TEXT_SHORT:
           'All files saved in this folder are backed up online automatically',
       DRIVE_WELCOME_TEXT_LONG:
           '<p><strong>Access files from everywhere, even offline.</strong> ' +
           'Files in Google Drive are up-to-date and available from any device.</p>' +
           '<p><strong>Keep your files safe.</strong> ' +
           'No matter what happens to your device, your files are ' +
           'safely stored in Google Drive .</p>' +
           '<p><strong>Share, create and collaborate</strong> ' +
           'on files with others all in one place .</p>',
-      DRIVE_WELCOME_GET_STARTED: 'Get started',
+      DRIVE_WELCOME_CHECK_ELIGIBILITY: 'Check eligibility',
       DRIVE_WELCOME_DISMISS: 'Dismiss',
       DRIVE_LOADING_PROGRESS: '$1 files fetched',
 
       OFFLINE_HEADER: 'You are offline',
       OFFLINE_MESSAGE: 'To save this file for offline use, get back online and<br>select the \'$1\' checkbox for this file.',
       OFFLINE_MESSAGE_PLURAL: 'To save these files for offline use, get back online and<br>select the \'$1\' checkbox for this file.',
       HOSTED_OFFLINE_MESSAGE: 'You must be online to access this file.',
       HOSTED_OFFLINE_MESSAGE_PLURAL: 'You must be online to access these files.',
 
       CONFIRM_MOBILE_DATA_USE: 'Fetching this file will use approximately $1 of mobile data.',
@@ skipping 240 matching lines @@
   playAudio: function(urls, position) {
     this.audioPlaylist_ = { items: urls, position: position };
     this.onPlaylistChanged.notify();
   },
 
   playVideo: function(url) {
     this.videoUrl_ = url;
     this.onVideoLaunched.notify();
   }
 };