Start the WebKit thread when we initialize the resource dispatcher host

chrome/browser/renderer_host/resource_dispatcher_host.cc

 // Copyright (c) 2009 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.
 
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
 
 #include "chrome/browser/renderer_host/resource_dispatcher_host.h"
 
 #include <vector>
 
@@ skipping 275 matching lines @@
   for (std::set<ProcessRouteIDs>::const_iterator iter = ids.begin();
        iter != ids.end(); ++iter) {
     CancelBlockedRequestsForRoute(iter->first, iter->second);
   }
 
   user_script_listener_->OnResourceDispatcherHostGone();
 }
 
 void ResourceDispatcherHost::Initialize() {
   DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
+  webkit_thread_->Initialize();
   safe_browsing_->Initialize();
   ChromeThread::PostTask(
       ChromeThread::IO, FROM_HERE,
       NewRunnableFunction(&appcache::AppCacheInterceptor::EnsureRegistered));
 }
 
 void ResourceDispatcherHost::Shutdown() {
   DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
   ChromeThread::PostTask(ChromeThread::IO, FROM_HERE, new ShutdownTask(this));
 }
@@ skipping 1512 matching lines @@
     case ViewHostMsg_UploadProgress_ACK::ID:
     case ViewHostMsg_SyncLoad::ID:
       return true;
 
     default:
       break;
   }
 
   return false;
 }