Introduce ServiceWorkerHandle for tracking WebServiceWorkerImpl reference

content/common/service_worker/service_worker_messages.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.
 
 // Message definition file, included multiple times, hence no include guard.
 
 #include "base/strings/string16.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "ipc/ipc_message_macros.h"
@@ skipping 52 matching lines @@
 
 // Informs the browser of a new ServiceWorkerProvider in the child process,
 // |provider_id| is unique within its child process.
 IPC_MESSAGE_CONTROL1(ServiceWorkerHostMsg_ProviderCreated,
                      int /* provider_id */)
 
 // Informs the browser of a ServiceWorkerProvider being destroyed.
 IPC_MESSAGE_CONTROL1(ServiceWorkerHostMsg_ProviderDestroyed,
                      int /* provider_id */)
 
+// Informs the browser of a ServiceWorker object being destroyed.
+IPC_MESSAGE_CONTROL1(ServiceWorkerHostMsg_ServiceWorkerObjectDestroyed,
+                     int /* handle_id */)
+
 // Informs the browser that |provider_id| is associated
 // with a service worker script running context and
 // |version_id| identifies which ServcieWorkerVersion.
 IPC_MESSAGE_CONTROL2(ServiceWorkerHostMsg_SetVersionId,
                      int /* provider_id */,
                      int64 /* version_id */)
 
 // Informs the browser of a new scriptable API client in the child process.
 IPC_MESSAGE_CONTROL2(ServiceWorkerHostMsg_AddScriptClient,
                      int /* thread_id */,
@@ skipping 17 matching lines @@
 IPC_MESSAGE_CONTROL2(ServiceWorkerHostMsg_FetchEventFinished,
                      content::ServiceWorkerFetchEventResult,
                      content::ServiceWorkerResponse)
 
 // Messages sent from the browser to the child process.
 
 // Response to ServiceWorkerMsg_RegisterServiceWorker
 IPC_MESSAGE_CONTROL4(ServiceWorkerMsg_ServiceWorkerRegistered,
                      int /* thread_id */,
                      int /* request_id */,
-                     int64 /* registration_id */,
+                     int /* handle_id */,
                      int64 /* version_id */)
 
 // Response to ServiceWorkerMsg_UnregisterServiceWorker
 IPC_MESSAGE_CONTROL2(ServiceWorkerMsg_ServiceWorkerUnregistered,
                      int /* thread_id */,
                      int /* request_id */)
 
 // Sent when any kind of registration error occurs during a
 // RegisterServiceWorker / UnregisterServiceWorker handler above.
 IPC_MESSAGE_CONTROL4(ServiceWorkerMsg_ServiceWorkerRegistrationError,
@@ skipping 15 matching lines @@
 IPC_MESSAGE_CONTROL3(ServiceWorkerMsg_Message,
                      base::string16 /* message */,
                      std::vector<int> /* sent_message_port_ids */,
                      std::vector<int> /* new_routing_ids */)
 
 // Sent via EmbeddedWorker to dispatch sync event.
 IPC_MESSAGE_CONTROL0(ServiceWorkerMsg_SyncEvent)
 
 // Informs the browser that sync event handling has finished.
 IPC_MESSAGE_CONTROL0(ServiceWorkerHostMsg_SyncEventFinished)