Implement update notifications for ChromeVox Next.

chrome/browser/resources/chromeos/chromevox/chromevox.gyp

 # 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.
 
 {
   'conditions': [
     ['chromeos==1', {
       'variables': {
         # Whether to compress the 4 main ChromeVox scripts.
         'chromevox_compress_js%': '1',
@@ skipping 56 matching lines @@
               'destination': '<(chromevox_dest_dir)/chromevox/background',
               'files': [
                 'chromevox/background/kbexplorer.html',
                 'chromevox/background/options.html',
               ],
             },
             {
               'destination': '<(chromevox_dest_dir)/cvox2/background',
               'files': [
                 'cvox2/background/background.html',
+                'cvox2/background/next_update.html',
                 'cvox2/background/panel.css',
                 'cvox2/background/panel.html',
               ],
             },
           ],
         },
         {
           # JavaScript files that are always directly included into the
           # destination directory.
           'target_name': 'chromevox_uncompiled_js_files',
@@ skipping 153 matching lines @@
                 '<(chromevox_panel_script_loader_file)',
               ],
               'includes': [ 'copy_js.gypi', ],
             },
           ],
         }],
       ],
     }],
   ],
 }