Remove disable-embedded-shared-worker flag and shared worker process related codes.

chrome/chrome.gyp

 # Copyright (c) 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': {
     'chromium_code': 1,
 
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 16 matching lines @@
         'chromium_browser_dependencies': [
           '../ppapi/ppapi_internal.gyp:ppapi_host',
         ],
         'chromium_child_dependencies': [
           'debugger',
           'plugin',
           'renderer',
           'utility',
           '../content/content.gyp:content_gpu',
           '../content/content.gyp:content_ppapi_plugin',
-          '../content/content.gyp:content_worker',
           '../third_party/WebKit/public/blink_devtools.gyp:blink_devtools_frontend_resources',
         ],
       }],
       ['enable_printing!=0', {
         'chromium_browser_dependencies': [
           '../printing/printing.gyp:printing',
         ],
       }],
       ['OS=="win"', {
         'platform_locale_settings_grd':
@@ skipping 715 matching lines @@
               'sources': [
                 'service/cloud_print/print_system_dummy.cc',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }