chromium/chrome/browser/preloading/prefetch/search_prefetch/search_prefetch_request.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 CHROME_BROWSER_PRELOADING_PREFETCH_SEARCH_PREFETCH_SEARCH_PREFETCH_REQUEST_H_
#define CHROME_BROWSER_PRELOADING_PREFETCH_SEARCH_PREFETCH_SEARCH_PREFETCH_REQUEST_H_

#include <memory>

#include "base/functional/callback.h"
#include "base/state_transitions.h"
#include "chrome/browser/preloading/prefetch/search_prefetch/search_prefetch_url_loader.h"
#include "services/network/public/cpp/resource_request.h"
#include "url/gurl.h"

class PrerenderManager;
class Profile;
class StreamingSearchPrefetchURLLoader;

namespace content {
class PreloadingAttempt;
enum class PreloadingTriggeringOutcome;
enum class PreloadingFailureReason;
}  // namespace content

namespace net {
struct NetworkTrafficAnnotationTag;
}  // namespace net

// These values are persisted to logs. Entries should not be renumbered and
// numeric values should never be reused.
// Any updates to this class need to be propagated to enums.xml.
enum class SearchPrefetchStatus { … };

// A class representing a prefetch used by the Search Prefetch Service.
// It plays the following roles to support search preloading.
// - Preparing a resource request to prefetch a search page.
// - Starting prerendering upon the request succeeding to upgrade prefetch to
//   prerender after the Search Prefetch Service tells it that the prefetched
//   term is prerenderable.
// - A container for a StreamingSearchPrefetchURLLoader, to support
// |TakeSearchPrefetchURLLoader()|
//   more easily.
class SearchPrefetchRequest { … };

// Used when DCHECK_STATE_TRANSITION triggers.
std::ostream& operator<<(std::ostream& o, const SearchPrefetchStatus& s);

#endif  // CHROME_BROWSER_PRELOADING_PREFETCH_SEARCH_PREFETCH_SEARCH_PREFETCH_REQUEST_H_