Service Worker: Improve error messages from register().

content/browser/service_worker/service_worker_context_wrapper.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/browser/service_worker/service_worker_context_wrapper.h"
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 124 matching lines @@
 
 void ServiceWorkerContextWrapper::set_storage_partition(
     StoragePartitionImpl* storage_partition) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   storage_partition_ = storage_partition;
 }
 
 static void FinishRegistrationOnIO(
     const ServiceWorkerContext::ResultCallback& continuation,
     ServiceWorkerStatusCode status,
+    const std::string& status_message,
     int64 registration_id) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(continuation, status == SERVICE_WORKER_OK));
 }
 
 void ServiceWorkerContextWrapper::RegisterServiceWorker(
     const GURL& pattern,
@@ skipping 222 matching lines @@
     context_core_.reset();
     return;
   }
   context_core_.reset(new ServiceWorkerContextCore(context_core_.get(), this));
   DVLOG(1) << "Restarted ServiceWorkerContextCore successfully.";
 
   observer_list_->Notify(&ServiceWorkerContextObserver::OnStorageWiped);
 }
 
 }  // namespace content