Reapplies all the IPC system work (reverts the revert r56272).

chrome/plugin/plugin_thread.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/plugin/plugin_thread.h"
 
 #include "build/build_config.h"
 
 #if defined(USE_X11)
 #include <gtk/gtk.h>
 #elif defined(OS_MACOSX)
 #include <CoreFoundation/CoreFoundation.h>
 #endif
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/process_util.h"
 #include "base/thread_local.h"
 #include "chrome/common/child_process.h"
 #include "chrome/common/chrome_plugin_lib.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/plugin_messages.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/plugin/chrome_plugin_host.h"
 #include "chrome/plugin/npobject_util.h"
 #include "chrome/renderer/render_thread.h"
+#include "ipc/ipc_channel_handle.h"
 #include "net/base/net_errors.h"
 #include "webkit/glue/plugins/plugin_lib.h"
 #include "webkit/glue/webkit_glue.h"
 #include "webkit/glue/plugins/webplugin_delegate_impl.h"
 
 #if defined(USE_X11)
 #include "app/x11_util.h"
 #elif defined(OS_MACOSX)
 #include "app/l10n_util.h"
 #include "base/mac_util.h"
@@ skipping 194 matching lines @@
   }
 
   if (!result || net_error != net::OK)
     return false;
 
   *proxy_list = proxy_result;
   return true;
 }
 
 }  // namespace webkit_glue