chromium/content/browser/renderer_host/navigation_state_keep_alive.h

// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_RENDERER_HOST_NAVIGATION_STATE_KEEP_ALIVE_H_
#define CONTENT_BROWSER_RENDERER_HOST_NAVIGATION_STATE_KEEP_ALIVE_H_

#include "base/memory/safe_ref.h"
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/public/common/tokens/tokens.h"
#include "third_party/blink/public/mojom/frame/remote_frame.mojom.h"

namespace content {

class PolicyContainerHost;
class RenderFrameHostImpl;
class SiteInstanceImpl;
class StoragePartitionImpl;

// A keepalive handle for state that may be referenced during a navigation,
// since a navigation can outlive its initiating frame. The lifetime of the
// keepalive handle is tied to a Mojo message pipe; closing the message pipe
// will destroy the corresponding keepalive object. Typically, this means
// that an active navigation retains a mojo::Remote endpoint for a
// `blink::mojom::NavigationStateKeepAliveHandle`.
// Anything kept alive by this class needs to be owned by this class, either
// explicitly or collectively (e.g. by scoped_refptr).
class NavigationStateKeepAlive
    : public blink::mojom::NavigationStateKeepAliveHandle { … };

}  // namespace content

#endif  // CONTENT_BROWSER_RENDERER_HOST_NAVIGATION_STATE_KEEP_ALIVE_H_