Port chromevox build to GN.

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',
-        'chromevox1_background_script_loader_file': 'chromevox/background/loader.js',
-        'chromevox1_content_script_loader_file': 'chromevox/injected/loader.js',
-        'chromevox1_kbexplorer_loader_file': 'chromevox/background/kbexplorer_loader.js',
-        'chromevox1_options_script_loader_file': 'chromevox/background/options_loader.js',
-        'chromevox2_background_script_loader_file': 'cvox2/background/loader.js',
       },
       'includes': [
+        'chromevox_assets.gypi',
         'chromevox_tests.gypi',
+        'chromevox_vars.gypi',
         'common.gypi',
       ],
       'targets': [
         {
           'target_name': 'chromevox',
           'type': 'none',
           'dependencies': [
             'chromevox_resources',
             'chromevox_manifest',
             'chromevox_guest_manifest',
@@ skipping 26 matching lines @@
               ],
             }, {  # chromevox_compress_js==0
               'dependencies': [
                 'chromevox_copied_scripts',
                 'chromevox_deps',
               ],
             }],
           ],
         },
         {
-          'target_name': 'chromevox_assets',
-          'type': 'none',
-          'includes': [
-            'chromevox_assets.gypi',
-          ],
-        },
-        {
           'target_name': 'chromevox_static_files',
           'type': 'none',
           'copies': [
             {
               'destination': '<(chromevox_dest_dir)/chromevox/background',
               'files': [
                 'chromevox/background/background.html',
                 'chromevox/background/kbexplorer.html',
                 'chromevox/background/options.html',
               ],
             },
             {
-              'destination': '<(PRODUCT_DIR)/resources/chromeos/chromevox/cvox2/background',
+              'destination': '<(chromevox_dest_dir)/cvox2/background',
               'files': [
                 'cvox2/background/background.html',
               ],
             },
           ],
         },
         {
           # JavaScript files that are always directly included into the
           # destination directory.
           'target_name': 'chromevox_uncompiled_js_files',
@@ skipping 145 matching lines @@
                 '<(chromevox2_background_script_loader_file)',
               ],
               'includes': [ 'copy_js.gypi', ],
             },
           ],
         }],
       ],
     }],
   ],
 }