MD Downloads: add a use_vulcanize option to Chrome

chrome/chrome_browser_ui.gypi

 # Copyright 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.
 
 {
   'variables': {
     # There are two sections of sources:
     # * "Platform"-based sources (OS, toolkit, etc.)
     # * Feature/directory-based sources (e.g., history, printing)
 
@@ skipping 3293 matching lines @@
         }],
         ['OS=="win" and (chromium_win_pch==0 or syzyasan==1)', {
           'msvs_shard': 4,
         }],
         ['OS!="android" and OS!="ios"', {
           'dependencies': [
             '../components/components.gyp:bubble',
             '../components/components.gyp:feedback_proto',
             '../device/bluetooth/bluetooth.gyp:device_bluetooth',
             '../third_party/libusb/libusb.gyp:libusb',
+            'chrome_features.gyp:chrome_common_features',
           ],
           'sources': [
             '<@(chrome_browser_ui_non_mobile_sources)',
             '<@(chrome_browser_ui_omnibox_non_mobile_sources)',
           ],
         }],
       ],
     },
   ],
 }