SWRegistration::unregister returns false when the registration is already unregistered. (2/3)

content/child/service_worker/service_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/child/service_worker/service_worker_dispatcher.h"
 
 #include "base/debug/trace_event.h"
 #include "base/lazy_instance.h"
 #include "base/stl_util.h"
 #include "base/threading/thread_local.h"
@@ skipping 259 matching lines @@
   registration->SetWaiting(GetServiceWorker(attrs.waiting, true));
   registration->SetActive(GetServiceWorker(attrs.active, true));
 
   callbacks->onSuccess(registration);
   pending_registration_callbacks_.Remove(request_id);
   TRACE_EVENT_ASYNC_END0("ServiceWorker",
                          "ServiceWorkerDispatcher::RegisterServiceWorker",
                          request_id);
 }
 
-void ServiceWorkerDispatcher::OnUnregistered(
-    int thread_id,
-    int request_id) {
+void ServiceWorkerDispatcher::OnUnregistered(int thread_id,
+                                             int request_id,
+                                             bool is_success) {
   WebServiceWorkerUnregistrationCallbacks* callbacks =
       pending_unregistration_callbacks_.Lookup(request_id);
   TRACE_EVENT_ASYNC_STEP_INTO0(
       "ServiceWorker",
       "ServiceWorkerDispatcher::UnregisterServiceWorker",
       request_id,
       "OnUnregistered");
   DCHECK(callbacks);
   if (!callbacks)
     return;
-  bool is_success = true;
   callbacks->onSuccess(&is_success);
   pending_unregistration_callbacks_.Remove(request_id);
   TRACE_EVENT_ASYNC_END0("ServiceWorker",
                          "ServiceWorkerDispatcher::UnregisterServiceWorker",
                          request_id);
 }
 
 void ServiceWorkerDispatcher::OnRegistrationError(
     int thread_id,
     int request_id,
@@ skipping 253 matching lines @@
   registrations_[registration_handle_id] = registration;
 }
 
 void ServiceWorkerDispatcher::RemoveServiceWorkerRegistration(
     int registration_handle_id) {
   DCHECK(ContainsKey(registrations_, registration_handle_id));
   registrations_.erase(registration_handle_id);
 }
 
 }  // namespace content