ServiceWorker: Release a reference when it fails to dispatch ExtendableMessageEvent

content/browser/service_worker/service_worker_handle.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_BROWSER_SERVICE_WORKER_SERVICE_WORKER_HANDLE_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_HANDLE_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 36 matching lines @@
 
   // ServiceWorkerVersion::Listener overrides.
   void OnVersionStateChanged(ServiceWorkerVersion* version) override;
 
   ServiceWorkerObjectInfo GetObjectInfo();
 
   int provider_id() const { return provider_id_; }
   int handle_id() const { return handle_id_; }
   ServiceWorkerVersion* version() { return version_.get(); }
 
+  int ref_count() const { return ref_count_; }
   bool HasNoRefCount() const { return ref_count_ <= 0; }
   void IncrementRefCount();
   void DecrementRefCount();
 
  private:
   base::WeakPtr<ServiceWorkerContextCore> context_;
   base::WeakPtr<ServiceWorkerProviderHost> provider_host_;
   const int provider_id_;
   const int handle_id_;
   int ref_count_;  // Created with 1.
   scoped_refptr<ServiceWorkerVersion> version_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerHandle);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_HANDLE_H_