chromium/content/browser/renderer_host/navigation_transitions/navigation_entry_screenshot_manager.h

// Copyright 2023 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_TRANSITIONS_NAVIGATION_ENTRY_SCREENSHOT_MANAGER_H_
#define CONTENT_BROWSER_RENDERER_HOST_NAVIGATION_TRANSITIONS_NAVIGATION_ENTRY_SCREENSHOT_MANAGER_H_

#include "base/containers/lru_cache.h"
#include "base/gtest_prod_util.h"
#include "base/memory/memory_pressure_listener.h"
#include "base/memory/safe_ref.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "content/common/content_export.h"

namespace content {

class NavigationEntryScreenshotCacheEvictor;

// This class manages the metadata for all `NavigationEntryScreenshot`s captured
// for the backward and forward navigation entries per `FrameTree`. The
// screenshots are used to present users with previews of the previous pages
// when the users initiate back/forward-navigations. This class is owned by a
// `BrowserContext`. All primary `FrameTree`s sharing the same `BrowserContext`
// share the same manager. The manager should only be accessed by the
// `NavigationEntryScreenshotCache` and tests.
class CONTENT_EXPORT NavigationEntryScreenshotManager { … };
}  // namespace content

#endif  // CONTENT_BROWSER_RENDERER_HOST_NAVIGATION_TRANSITIONS_NAVIGATION_ENTRY_SCREENSHOT_MANAGER_H_