Set up content in-process main threads via factory

content/content_renderer.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': [
     '../jingle/jingle.gyp:jingle_glue',
     '../media/media.gyp:media',
     '../net/net.gyp:net',
     '../skia/skia.gyp:skia',
@@ skipping 448 matching lines @@
     'renderer/renderer_clipboard_client.cc',
     'renderer/renderer_clipboard_client.h',
     'renderer/renderer_date_time_picker.cc',
     'renderer/renderer_date_time_picker.h',
     'renderer/renderer_main.cc',
     'renderer/renderer_main_platform_delegate.h',
     'renderer/renderer_main_platform_delegate_android.cc',
     'renderer/renderer_main_platform_delegate_linux.cc',
     'renderer/renderer_main_platform_delegate_mac.mm',
     'renderer/renderer_main_platform_delegate_win.cc',
+    'renderer/renderer_main_thread.cc',
+    'renderer/renderer_main_thread.h',
     'renderer/renderer_webapplicationcachehost_impl.cc',
     'renderer/renderer_webapplicationcachehost_impl.h',
     'renderer/renderer_webcookiejar_impl.cc',
     'renderer/renderer_webcookiejar_impl.h',
     'renderer/renderer_webcolorchooser_impl.cc',
     'renderer/renderer_webcolorchooser_impl.h',
     'renderer/renderer_webkitplatformsupport_impl.cc',
     'renderer/renderer_webkitplatformsupport_impl.h',
     'renderer/rendering_benchmark.cc',
     'renderer/rendering_benchmark.h',
@@ skipping 220 matching lines @@
     }],
   ],
   'target_conditions': [
     ['OS=="android"', {
       'sources/': [
         ['include', '^renderer/render_view_linux\\.cc$'],
       ],
     }],
   ],
 }