webui_contents_preload_manager.h | Explore in Territory

// 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 CHROME_BROWSER_UI_WEBUI_TOP_CHROME_WEBUI_CONTENTS_PRELOAD_MANAGER_H_
#define CHROME_BROWSER_UI_WEBUI_TOP_CHROME_WEBUI_CONTENTS_PRELOAD_MANAGER_H_

#include <optional>

#include "base/scoped_observation.h"
#include "base/time/time.h"
#include "chrome/browser/profiles/profile_observer.h"
#include "chrome/browser/ui/webui/top_chrome/per_profile_webui_tracker.h"
#include "chrome/browser/ui/webui/top_chrome/preload_candidate_selector.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/web_contents.h"
#include "url/gurl.h"

class Browser;
class PerProfileWebUITracker;

// WebUIContentsPreloadManager is a singleton class that preloads top Chrome
// WebUIs. At anytime, at most one WebContents is preloaded across all profiles.
// If under heavy memory pressure, no preloaded contents will be created.
//
// To make a WebUI preloadable, update GetAllPreloadableWebUIURLs() and
// ensure that tests pass.
class WebUIContentsPreloadManager : public ProfileObserver,
                                    public PerProfileWebUITracker::Observer { … };

#endif  // CHROME_BROWSER_UI_WEBUI_TOP_CHROME_WEBUI_CONTENTS_PRELOAD_MANAGER_H_
chromium/chrome/browser/ui/webui/top_chrome/webui_contents_preload_manager.h
