chromium/components/performance_manager/service_worker_context_adapter.h

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_PERFORMANCE_MANAGER_SERVICE_WORKER_CONTEXT_ADAPTER_H_
#define COMPONENTS_PERFORMANCE_MANAGER_SERVICE_WORKER_CONTEXT_ADAPTER_H_

#include <memory>
#include <string>

#include "base/check_op.h"
#include "base/containers/flat_map.h"
#include "base/containers/flat_set.h"
#include "base/observer_list.h"
#include "base/scoped_observation.h"
#include "content/public/browser/service_worker_context.h"
#include "content/public/browser/service_worker_context_observer.h"

namespace content {
class RenderProcessHost;
}

namespace performance_manager {

// Interface that makes testing easier. The only practical implementaion is the
// class below.
class ServiceWorkerContextAdapter { … };

// This class adapts an existing ServiceWorkerContext to ensure that the
// OnVersionStoppedRunning() notifications are sent as soon as the render
// process of a running service worker exits.
//
// It observes the underlying context so that it can receive the original
// notifications and control when they are sent to the observers.
//
// Lives on the UI thread. Must outlive |underlying_context|.
//
// Note: This is a temporary class that can be removed when the representation
//       of a worker in the content/ layer (ServiceWorkerVersion) is moved to
//       the UI thread. At that point, it'll be able to observe its associated
//       RenderProcessHost itself. See https://crbug.com/824858.
class ServiceWorkerContextAdapterImpl
    : public ServiceWorkerContextAdapter,
      public content::ServiceWorkerContextObserver { … };

}  // namespace performance_manager

#endif  // COMPONENTS_PERFORMANCE_MANAGER_SERVICE_WORKER_CONTEXT_ADAPTER_H_