Build ChromeVox using gyp.

chrome/third_party/chromevox/chromevox.gyp

 # 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.
 
 {
   'conditions': [
     ['chromeos==1', {
       'targets': [
         {
           'target_name': 'chromevox_third_party_resources',
           'type': 'none',
           'copies': [
-            {
-              'destination': '<(PRODUCT_DIR)/resources/chromeos/chromevox',
-              'files': [
-                'chromeVoxChromeBackgroundScript.js',
-                'chromeVoxChromeOptionsScript.js',
-                'chromeVoxChromePageScript.js',
-                'chromeVoxKbExplorerScript.js',
-              ],
-            },
             # TODO(plundblad): Some of these css files are forks of
             # cs from Chrome's web ui.  Consider consolidating those.
             {
               'destination': '<(PRODUCT_DIR)/resources/chromeos/chromevox/chromevox/background',
               'files': [
                 'chromevox/background/chrome_shared2.css',
                 'chromevox/background/options.css',
                 'chromevox/background/options_widgets.css',
               ],
             },
             {
               'destination': '<(PRODUCT_DIR)/resources/chromeos/chromevox/chromevox/injected',
               'files': [
                 'chromevox/injected/mathjax_external_util.js',
                 'chromevox/injected/mathjax.js',
               ],
             },
             {
-              'destination': '<(PRODUCT_DIR)/resources/chromeos/chromevox/closure',
-              'files': [
-                'third_party/closure-library/closure/goog/base.js',
-              ],
-            },
-            {
               'destination': '<(PRODUCT_DIR)/resources/chromeos/chromevox/',
               'files': [
                 '_locales/',
               ],
             },
           ],
+          'conditions': [
+            ['use_migrated_chromevox==0', {
+              'copies': [
+                {
+                  'destination': '<(PRODUCT_DIR)/resources/chromeos/chromevox',
+                  'files': [
+                    'chromeVoxChromeBackgroundScript.js',
+                    'chromeVoxChromeOptionsScript.js',
+                    'chromeVoxChromePageScript.js',
+                    'chromeVoxKbExplorerScript.js',
+                  ],
+                },
+              ],
+            }],
+          ],
         },
       ],
     }],
   ],
 }