Implement the ServiceWorker "activate" event during activation

content/browser/service_worker/embedded_worker_registry.h

 // 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.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_REGISTRY_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_REGISTRY_H_
 
 #include <map>
 #include <set>
 
@@ skipping 36 matching lines @@
                                       int embedded_worker_id,
                                       int64 service_worker_version_id,
                                       const GURL& script_url);
   ServiceWorkerStatusCode StopWorker(int process_id,
                                      int embedded_worker_id);
 
   // Called back from EmbeddedWorker in the child process, relayed via
   // ServiceWorkerDispatcherHost.
   void OnWorkerStarted(int process_id, int thread_id, int embedded_worker_id);
   void OnWorkerStopped(int process_id, int embedded_worker_id);
+  // FIXME(dominicc): Rename this. The name leads to confusion that
+  // this sends a message to the browser itself.
   void OnSendMessageToBrowser(int embedded_worker_id,
                               int request_id,
                               const IPC::Message& message);
 
   // Keeps a map from process_id to sender information.
   void AddChildProcessSender(int process_id, IPC::Sender* sender);
   void RemoveChildProcessSender(int process_id);
 
   // Returns an embedded worker instance for given |embedded_worker_id|.
   EmbeddedWorkerInstance* GetWorker(int embedded_worker_id);
@@ skipping 22 matching lines @@
   std::map<int, std::set<int> > worker_process_map_;
 
   int next_embedded_worker_id_;
 
   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerRegistry);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_REGISTRY_H_