Create an API around UtilityProcessHost and use that from chrome.

content/browser/plugin_service_impl.cc

 // 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.
 
 #include "content/browser/plugin_service_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/file_path.h"
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 #include "base/path_service.h"
 #include "base/string_util.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "content/browser/plugin_loader_posix.h"
 #include "content/browser/plugin_service_filter.h"
 #include "content/browser/ppapi_plugin_process_host.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/resource_context.h"
-#include "content/browser/utility_process_host.h"
 #include "content/common/pepper_plugin_registry.h"
 #include "content/common/plugin_messages.h"
 #include "content/common/utility_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/process_type.h"
@@ skipping 622 matching lines @@
   plugin_list_->RegisterInternalPlugin(info, add_at_beginning);
 }
 
 string16 PluginServiceImpl::GetPluginGroupName(const std::string& plugin_name) {
   return plugin_list_->GetPluginGroupName(plugin_name);
 }
 
 webkit::npapi::PluginList* PluginServiceImpl::GetPluginList() {
   return plugin_list_;
 }