ServiceWorker: Add initial implementation of ExtendableMessageEvent behind a flag

content/child/service_worker/web_service_worker_impl.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/web_service_worker_impl.h"
 
 #include <utility>
 
 #include "base/macros.h"
 #include "content/child/service_worker/service_worker_dispatcher.h"
@@ skipping 25 matching lines @@
   scoped_refptr<WebServiceWorkerImpl> worker_;
 
   DISALLOW_COPY_AND_ASSIGN(HandleImpl);
 };
 
 void SendPostMessageToWorkerOnMainThread(
     ThreadSafeSender* thread_safe_sender,
     int handle_id,
     const base::string16& message,
     scoped_ptr<WebMessagePortChannelArray> channels) {
-  thread_safe_sender->Send(new ServiceWorkerHostMsg_PostMessageToWorker(
-      handle_id, message,
-      WebMessagePortChannelImpl::ExtractMessagePortIDs(std::move(channels))));
+  // TODO(nhiroki): Switch to PostMessageToClient message after
+  // ExtendableMessageEvent is implemented (crbug.com/543198).
+  thread_safe_sender->Send(
+      new ServiceWorkerHostMsg_DeprecatedPostMessageToWorker(
+          handle_id, message, WebMessagePortChannelImpl::ExtractMessagePortIDs(
+                                  std::move(channels))));
 }
 
 }  // namespace
 
 WebServiceWorkerImpl::WebServiceWorkerImpl(
     scoped_ptr<ServiceWorkerHandleReference> handle_ref,
     ThreadSafeSender* thread_safe_sender)
     : handle_ref_(std::move(handle_ref)),
       state_(handle_ref_->state()),
       thread_safe_sender_(thread_safe_sender),
@@ skipping 65 matching lines @@
 }
 
 WebServiceWorkerImpl::~WebServiceWorkerImpl() {
   ServiceWorkerDispatcher* dispatcher =
       ServiceWorkerDispatcher::GetThreadSpecificInstance();
   if (dispatcher)
     dispatcher->RemoveServiceWorker(handle_ref_->handle_id());
 }
 
 }  // namespace content