Service Worker: Migrate to version_uuid and surface ServiceWorker.id. (Blink 1/3)

Source/modules/serviceworkers/ServiceWorker.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 83 matching lines @@
     case WebServiceWorkerStateActivated:
         return "activated";
     case WebServiceWorkerStateRedundant:
         return "redundant";
     default:
         ASSERT_NOT_REACHED();
         return nullAtom;
     }
 }
 
+String ServiceWorker::id() const
+{
+    return m_outerWorker->id();
+}
+
 PassRefPtrWillBeRawPtr<ServiceWorker> ServiceWorker::from(ExecutionContext* executionContext, WebType* worker)
 {
     if (!worker)
         return nullptr;
 
     RefPtrWillBeRawPtr<ServiceWorker> serviceWorker = getOrCreate(executionContext, worker);
     return serviceWorker.release();
 }
 
 bool ServiceWorker::hasPendingActivity() const
@@ skipping 33 matching lines @@
 {
     ASSERT(m_outerWorker);
     m_outerWorker->setProxy(this);
 }
 
 ServiceWorker::~ServiceWorker()
 {
 }
 
 } // namespace blink