ServiceWorker: Add initial implementation of ExtendableMessageEvent behind a flag

content/browser/service_worker/service_worker_version.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_SERVICE_WORKER_VERSION_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_
 
 #include <stdint.h>
 
 #include <functional>
@@ skipping 218 matching lines @@
   // For simple events where the full functionality of DispatchEvent is not
   // needed, this method can be used instead. The ResponseMessage must consist
   // of just a request_id and a blink::WebServiceWorkerEventResult field. The
   // result is converted to a ServiceWorkerStatusCode and passed to the error
   // handler associated with the request. Additionally this methods calls
   // FinishRequest before passing the reply to the callback.
   template <typename ResponseMessage>
   void DispatchSimpleEvent(int request_id, const IPC::Message& message);
 
   // Sends a message event to the associated embedded worker.
+  // TODO(nhiroki): Remove this after ExtendableMessageEvent is enabled by
+  // default (crbug.com/543198).
   void DispatchMessageEvent(
       const base::string16& message,
       const std::vector<TransferredMessagePort>& sent_message_ports,
       const StatusCallback& callback);
 
+  // Sends an extendable message event to the associated embedded worker.
+  // TODO(nhiroki): This should be moved to ServiceWorkerDispatcherHost in favor
+  // of crbug.com/570820 after ExtendableMessageEvent is implemented
+  // (crbug.com/543198).
+  void DispatchExtendableMessageEvent(
+      const base::string16& message,
+      const std::vector<TransferredMessagePort>& sent_message_ports,
+      const StatusCallback& callback);
+
   // Sends install event to the associated embedded worker and asynchronously
   // calls |callback| when it errors out or it gets a response from the worker
   // to notify install completion.
   //
   // This must be called when the status() is NEW. Calling this changes
   // the version's status to INSTALLING.
   // Upon completion, the version's status will be changed to INSTALLED
   // on success, or back to NEW on failure.
   void DispatchInstallEvent(const StatusCallback& callback);
 
@@ skipping 277 matching lines @@
                               int message_level,
                               const base::string16& message,
                               int line_number,
                               const GURL& source_url) override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
   void OnStartSentAndScriptEvaluated(ServiceWorkerStatusCode status);
 
   void DispatchInstallEventAfterStartWorker(const StatusCallback& callback);
   void DispatchActivateEventAfterStartWorker(const StatusCallback& callback);
+  void DispatchExtendableMessageEventAfterStartWorker(
+      const base::string16& message,
+      const std::vector<TransferredMessagePort>& sent_message_ports,
+      const StatusCallback& callback);
 
   void DispatchMessageEventInternal(
       const base::string16& message,
       const std::vector<TransferredMessagePort>& sent_message_ports,
       const StatusCallback& callback);
 
   // Message handlers.
 
   // This corresponds to the spec's matchAll(options) steps.
   void OnGetClients(int request_id,
@@ skipping 272 matching lines @@
 
   // At this point |this| can have been deleted, so don't do anything other
   // than returning.
 
   return true;
 }
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_