Add widevine and extensions resources to GN build.

webkit/common/webkit_common.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.
 
 {
   'variables': {
     'enable_wexit_time_destructors': 1,
     'chromium_code': 1
   },
   'targets': [
     {
+      # GN version: //webkit/common:common",
       'target_name': 'webkit_common',
       'type': '<(component)',
       'defines': [
         'WEBKIT_COMMON_IMPLEMENTATION',
       ],
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/base/base.gyp:base_i18n',
         '<(DEPTH)/base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '<(DEPTH)/net/net.gyp:net',
@@ skipping 40 matching lines @@
           },
         }],
         ['OS=="win"', {
           # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
           'msvs_disabled_warnings': [ 4800, 4267 ],
         }],
       ],
     },
   ],
 }