Run the later parts of startup as UI thread tasks

content/content_browser.gypi

 # 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.
 
 {
   'dependencies': [
     'browser/speech/proto/speech_proto.gyp:speech_proto',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../google_apis/google_apis.gyp:google_apis',
@@ skipping 297 matching lines @@
     'browser/browser_plugin/browser_plugin_guest_manager.cc',
     'browser/browser_plugin/browser_plugin_guest_manager.h',
     'browser/browser_plugin/browser_plugin_host_factory.h',
     'browser/browser_plugin/browser_plugin_message_filter.cc',
     'browser/browser_plugin/browser_plugin_message_filter.h',
     'browser/browser_plugin/browser_plugin_popup_menu_helper_mac.h',
     'browser/browser_plugin/browser_plugin_popup_menu_helper_mac.mm',
     'browser/browser_process_sub_thread.cc',
     'browser/browser_process_sub_thread.h',
     'browser/browser_thread_impl.cc',
+    'browser/browser_startup_configuration.cc',
+    'browser/browser_startup_configuration.h',
     'browser/browser_thread_impl.h',
     'browser/browser_url_handler_impl.cc',
     'browser/browser_url_handler_impl.h',
     'browser/browsing_instance.cc',
     'browser/browsing_instance.h',
     'browser/byte_stream.cc',
     'browser/byte_stream.h',
     'browser/cert_store_impl.cc',
     'browser/cert_store_impl.h',
     'browser/child_process_launcher.cc',
@@ skipping 699 matching lines @@
     'browser/ssl/ssl_host_state.cc',
     'browser/ssl/ssl_host_state.h',
     'browser/ssl/ssl_manager.cc',
     'browser/ssl/ssl_manager.h',
     'browser/ssl/ssl_policy_backend.cc',
     'browser/ssl/ssl_policy_backend.h',
     'browser/ssl/ssl_policy.cc',
     'browser/ssl/ssl_policy.h',
     'browser/ssl/ssl_request_info.cc',
     'browser/ssl/ssl_request_info.h',
+    'browser/startup_task_runner.cc',
+    'browser/startup_task_runner.h',
     'browser/streams/stream.cc',
     'browser/streams/stream.h',
     'browser/streams/stream_context.cc',
     'browser/streams/stream_handle_impl.cc',
     'browser/streams/stream_handle_impl.h',
     'browser/streams/stream_context.h',
     'browser/streams/stream_read_observer.h',
     'browser/streams/stream_registry.cc',
     'browser/streams/stream_registry.h',
     'browser/streams/stream_url_request_job.cc',
@@ skipping 439 matching lines @@
         '../third_party/speex/speex.gyp:libspeex',
       ],
     }],
     ['linux_use_libgps==1', {
       'dependencies': [
         '../build/linux/system.gyp:libgps',
       ],
     }],
   ],
 }