add ENABLE_WEB_SOCKETS

build/features_override.gypi

 # Copyright (c) 2009 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.
 
 # This file is only included in full-chromium builds, and overrides the
 # feature_defines variable in third_party/WebKit/WebKit/chromium/features.gypi.
 {
   'variables': {
     # WARNING: This list of strings completely replaces the list in
     # features.gypi. Therefore, if an enable is listed in features.gypi
@@ skipping 14 matching lines @@
       'ENABLE_XSLT=1',
       'ENABLE_XPATH=1',
       'ENABLE_SHARED_WORKERS=0',
       'ENABLE_SVG=1',
       'ENABLE_SVG_ANIMATION=1',
       'ENABLE_SVG_AS_IMAGE=1',
       'ENABLE_SVG_USE=1',
       'ENABLE_SVG_FOREIGN_OBJECT=1',
       'ENABLE_SVG_FONTS=1',
       'ENABLE_VIDEO=1',
+      'ENABLE_WEB_SOCKETS=1',
       'ENABLE_WORKERS=1',
     ],
     # TODO: If the need arises, create a mechanism that will intelligently
     # merge the lists rather than replace one with the other. This may
     # require changes in gyp.
   },
-}
+}