Teach EmbeddedWorkerInstance to create a process when it needs one.

content/browser/service_worker/service_worker_internals_ui.cc

 // Copyright 2014 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/service_worker/service_worker_internals_ui.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 549 matching lines @@
         "serviceworker.onOperationComplete",
         std::vector<const Value*>(original_args_->begin(),
                                   original_args_->end()));
 }
 
 void ServiceWorkerInternalsUI::OperationProxy::StartActiveWorker(
     ServiceWorkerStatusCode status,
     const scoped_refptr<ServiceWorkerRegistration>& registration) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   if (status == SERVICE_WORKER_OK) {
-    registration->active_version()->StartWorker(base::Bind(
-        &ServiceWorkerInternalsUI::OperationProxy::OperationComplete, this));
+    registration->active_version()->StartWorker(
+        base::Bind(&ServiceWorkerInternalsUI::OperationProxy::OperationComplete,
+                   this),
+        std::vector<int>());
     return;
   }
 
   OperationComplete(status);
 }
 
 void ServiceWorkerInternalsUI::OperationProxy::StopActiveWorker(
     ServiceWorkerStatusCode status,
     const scoped_refptr<ServiceWorkerRegistration>& registration) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
@@ skipping 15 matching lines @@
           ServiceWorkerVersion::ACTIVE) {
     registration->active_version()->DispatchSyncEvent(base::Bind(
         &ServiceWorkerInternalsUI::OperationProxy::OperationComplete, this));
     return;
   }
 
   OperationComplete(SERVICE_WORKER_ERROR_FAILED);
 }
 
 }  // namespace content