Implement the ServiceWorker "activate" event during activation

content/renderer/service_worker/service_worker_script_context.h

 // 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.
 
 #ifndef CONTENT_RENDERER_SERVICE_WORKER_SERVICE_WORKER_SCRIPT_CONTEXT_H_
 #define CONTENT_RENDERER_SERVICE_WORKER_SERVICE_WORKER_SCRIPT_CONTEXT_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 20 matching lines @@
 // potential EW/SW layering concerns.
 class ServiceWorkerScriptContext {
  public:
   ServiceWorkerScriptContext(
       EmbeddedWorkerContextClient* embedded_context,
       blink::WebServiceWorkerContextProxy* proxy);
   ~ServiceWorkerScriptContext();
 
   void OnMessageReceived(int request_id, const IPC::Message& message);
 
+  void DidHandleActivateEvent(int request_id,
+                              blink::WebServiceWorkerEventResult);
   void DidHandleInstallEvent(int request_id,
                              blink::WebServiceWorkerEventResult result);
   void DidHandleFetchEvent(int request_id,
                            ServiceWorkerFetchEventResult result,
                            const ServiceWorkerResponse& response);
 
  private:
   // Send message back to the browser.
   void Send(int request_id, const IPC::Message& message);
 
+  void OnActivateEvent();
   void OnInstallEvent(int active_version_id);
   void OnFetchEvent(const ServiceWorkerFetchRequest& request);
   void OnPostMessage(const base::string16& message,
                      const std::vector<int>& sent_message_port_ids,
                      const std::vector<int>& new_routing_ids);
 
   // Not owned; embedded_context_ owns this.
   EmbeddedWorkerContextClient* embedded_context_;
 
   // Not owned; this object is destroyed when proxy_ becomes invalid.
   blink::WebServiceWorkerContextProxy* proxy_;
 
   // Used for incoming messages from the browser for which an outgoing response
   // back to the browser is expected, the id must be sent back with the
   // response.
   int current_request_id_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerScriptContext);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SERVICE_WORKER_SERVICE_WORKER_SCRIPT_CONTEXT_H_