Add a sequenced worker pool

content/content_common.gypi

 # Copyright (c) 2011 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../build/temp_gyp/googleurl.gyp:googleurl',
     '../gpu/gpu.gyp:gpu_ipc',
     '../ipc/ipc.gyp:ipc',
@@ skipping 200 matching lines @@
     'common/sandbox_init_wrapper_win.cc',
     'common/sandbox_mac.h',
     'common/sandbox_mac.mm',
     'common/sandbox_methods_linux.h',
     'common/sandbox_policy.cc',
     'common/sandbox_policy.h',
     'common/section_util_win.cc',
     'common/section_util_win.h',
     'common/sensors.h',
     'common/sensors_listener.h',
+    'common/sequenced_worker_pool.cc',
+    'common/sequenced_worker_pool.h',
     'common/set_process_title.cc',
     'common/set_process_title.h',
     'common/set_process_title_linux.cc',
     'common/set_process_title_linux.h',
     'common/socket_stream.h',
     'common/socket_stream_dispatcher.cc',
     'common/socket_stream_dispatcher.h',
     'common/socket_stream_messages.h',
     'common/speech_input_messages.h',
     'common/speech_input_result.cc',
@@ skipping 95 matching lines @@
       ],
       'link_settings': {
         'libraries': [
           '-lEGL',
           '-lGLESv2',
         ],
       },
     }],
   ],
 }