Register a Service Worker when an extension is enabled.

content/renderer/service_worker/embedded_worker_dispatcher.cc

 // Copyright 2013 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/renderer/service_worker/embedded_worker_dispatcher.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/child/child_process.h"
@@ skipping 45 matching lines @@
   RenderThreadImpl::current()->thread_safe_sender()->Send(
       new EmbeddedWorkerHostMsg_WorkerStopped(embedded_worker_id));
   workers_.Remove(embedded_worker_id);
 }
 
 void EmbeddedWorkerDispatcher::OnStartWorker(
     int embedded_worker_id,
     int64 service_worker_version_id,
     const GURL& script_url) {
   DCHECK(!workers_.Lookup(embedded_worker_id));
+  RenderThread::Get()->EnsureWebKitInitialized();
   scoped_ptr<WorkerWrapper> wrapper(new WorkerWrapper(
       blink::WebEmbeddedWorker::create(
           new EmbeddedWorkerContextClient(
               embedded_worker_id,
               service_worker_version_id,
               script_url),
           NULL)));
 
   blink::WebEmbeddedWorkerStartData start_data;
   start_data.scriptURL = script_url;
@@ skipping 11 matching lines @@
     return;
   }
 
   // This should eventually call WorkerContextDestroyed. (We may need to post
   // a delayed task to forcibly abort the worker context if we find it
   // necessary)
   wrapper->worker()->terminateWorkerContext();
 }
 
 }  // namespace content