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// Copyright 2017 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_PUBLIC_BROWSER_NETWORK_SERVICE_INSTANCE_H_
#define CONTENT_PUBLIC_BROWSER_NETWORK_SERVICE_INSTANCE_H_
#include <memory>
#include "base/callback.h"
#include "base/callback_list.h"
#include "content/common/content_export.h"
#include "services/network/public/cpp/network_connection_tracker.h"
namespace base {
class DeferredSequencedTaskRunner;
}
namespace net {
class NetworkChangeNotifier;
} // namespace net
namespace network {
class NetworkService;
namespace mojom {
class NetworkService;
}
} // namespace network
namespace service_manager {
class Connector;
} // namespace service_manager
namespace content {
// Returns a pointer to the NetworkService, creating / re-creating it as needed.
// NetworkService will be running in-process if
// 1) kNetworkService feature is disabled, or
// 2) kNetworkService and kNetworkServiceInProcess are enabled
// Otherwise it runs out of process.
// This method can only be called on the UI thread.
CONTENT_EXPORT network::mojom::NetworkService* GetNetworkService();
// Similar to GetNetworkService(), but will create the NetworkService from a
// service manager connector if needed. If network service is disabled,
// |connector| will be ignored and this method is identical to
// GetNetworkService().
// This method can only be called on the UI thread.
CONTENT_EXPORT network::mojom::NetworkService* GetNetworkServiceFromConnector(
service_manager::Connector* connector);
// Registers |handler| to run (on UI thread) after NetworkServicePtr encounters
// an error. Note that there are no ordering guarantees wrt error handlers for
// other interfaces (e.g. NetworkContextPtr and/or URLLoaderFactoryPtr).
//
// Can only be called on the UI thread. No-op if NetworkService is disabled.
CONTENT_EXPORT std::unique_ptr<base::CallbackList<void()>::Subscription>
RegisterNetworkServiceCrashHandler(base::RepeatingClosure handler);
// When network service is disabled, returns the in-process NetworkService
// pointer which is used to ease transition to network service.
// Must only be called on the IO thread. Must not be called if the network
// service is enabled.
CONTENT_EXPORT network::NetworkService* GetNetworkServiceImpl();
// Returns the global NetworkChangeNotifier instance.
CONTENT_EXPORT net::NetworkChangeNotifier* GetNetworkChangeNotifier();
// Call |FlushForTesting()| on cached |NetworkServicePtr|. For testing only.
// Must only be called on the UI thread.
CONTENT_EXPORT void FlushNetworkServiceInstanceForTesting();
// Returns a NetworkConnectionTracker that can be used to subscribe for
// network change events.
// Must only be called on the UI thread.
CONTENT_EXPORT network::NetworkConnectionTracker* GetNetworkConnectionTracker();
// Asynchronously calls the given callback with a NetworkConnectionTracker that
// can be used to subscribe to network change events.
//
// This is a helper method for classes that can't easily call
// GetNetworkConnectionTracker from the UI thread.
CONTENT_EXPORT void GetNetworkConnectionTrackerFromUIThread(
base::OnceCallback<void(network::NetworkConnectionTracker*)> callback);
// Helper method to create a NetworkConnectionTrackerAsyncGetter.
CONTENT_EXPORT network::NetworkConnectionTrackerAsyncGetter
CreateNetworkConnectionTrackerAsyncGetter();
// Sets the NetworkConnectionTracker instance to use. For testing only.
// Must be called on the UI thread. Must be called before the first call to
// GetNetworkConnectionTracker.
CONTENT_EXPORT void SetNetworkConnectionTrackerForTesting(
network::NetworkConnectionTracker* network_connection_tracker);
// Gets the task runner for the thread the network service will be running on
// when running in-process. Can only be called when network service is in
// process.
CONTENT_EXPORT scoped_refptr<base::DeferredSequencedTaskRunner>
GetNetworkTaskRunner();
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_NETWORK_SERVICE_INSTANCE_H_
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