ServiceWorker: Release a reference when it fails to dispatch ExtendableMessageEvent

content/browser/service_worker/service_worker_dispatcher_host.h

Index: content/browser/service_worker/service_worker_dispatcher_host.h
diff --git a/content/browser/service_worker/service_worker_dispatcher_host.h b/content/browser/service_worker/service_worker_dispatcher_host.h
index e1f57d02aa314e9841cef85eb2f8cc2fecd69dd3..d2c6812cd730b6688f4101c839fa5482a9ed5772 100644
--- a/content/browser/service_worker/service_worker_dispatcher_host.h
+++ b/content/browser/service_worker/service_worker_dispatcher_host.h
@@ -88,8 +88,11 @@ class CONTENT_EXPORT ServiceWorkerDispatcherHost : public BrowserMessageFilter {
  private:
   friend class BrowserThread;
   friend class base::DeleteHelper<ServiceWorkerDispatcherHost>;
+  friend class ServiceWorkerDispatcherHostTest;
   friend class TestingServiceWorkerDispatcherHost;
 
+  using StatusCallback = base::Callback<void(ServiceWorkerStatusCode status)>;
+
   // IPC Message handlers
   void OnRegisterServiceWorker(int thread_id,
                                int request_id,
@@ -154,21 +157,33 @@ class CONTENT_EXPORT ServiceWorkerDispatcherHost : public BrowserMessageFilter {
 
   void OnTerminateWorker(int handle_id);
 
-  template <typename SourceInfo>
   void DispatchExtendableMessageEvent(
       scoped_refptr<ServiceWorkerVersion> worker,
       const base::string16& message,
       const url::Origin& source_origin,
       const std::vector<TransferredMessagePort>& sent_message_ports,
+      ServiceWorkerProviderHost* sender_provider_host,
+      const StatusCallback& callback);
+  template <typename SourceInfo>
+  void DispatchExtendableMessageEventInternal(
+      scoped_refptr<ServiceWorkerVersion> worker,
+      const base::string16& message,
+      const url::Origin& source_origin,
+      const std::vector<TransferredMessagePort>& sent_message_ports,
+      const StatusCallback& callback,
       const SourceInfo& source_info);
   void DispatchExtendableMessageEventAfterStartWorker(
       scoped_refptr<ServiceWorkerVersion> worker,
       const base::string16& message,
       const url::Origin& source_origin,
       const std::vector<TransferredMessagePort>& sent_message_ports,
-      const ExtendableMessageEventSource& source);
+      const ExtendableMessageEventSource& source,
+      const StatusCallback& callback);
+  template <typename SourceInfo>
   void DidFailToDispatchExtendableMessageEvent(
       const std::vector<TransferredMessagePort>& sent_message_ports,
+      const SourceInfo& source_info,
+      const StatusCallback& callback,
       ServiceWorkerStatusCode status);
 
   ServiceWorkerRegistrationHandle* FindRegistrationHandle(