content/browser/client_hints/client_hints.h

// Copyright 2019 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_BROWSER_CLIENT_HINTS_CLIENT_HINTS_H_
#define CONTENT_BROWSER_CLIENT_HINTS_CLIENT_HINTS_H_

#include <memory>
#include <string>

#include "content/public/browser/client_hints_controller_delegate.h"
#include "net/http/http_request_headers.h"

class BrowserContext;

namespace content {

// Returns |rtt| after adding host-specific random noise, and rounding it as
// per the NetInfo spec to improve privacy.
CONTENT_EXPORT unsigned long RoundRttForTesting(
    const std::string& host,
    const base::Optional<base::TimeDelta>& rtt);

// Returns downlink (in Mbps) after adding host-specific random noise to
// |downlink_kbps| (which is in Kbps), and rounding it as per the NetInfo spec
// to improve privacy.
CONTENT_EXPORT double RoundKbpsToMbpsForTesting(
    const std::string& host,
    const base::Optional<int32_t>& downlink_kbps);

CONTENT_EXPORT void AddNavigationRequestClientHintsHeaders(
    const GURL& url,
    net::HttpRequestHeaders* headers,
    content::BrowserContext* context,
    content::ClientHintsControllerDelegate* delegate);

}  // namespace content

#endif  // CONTENT_BROWSER_CLIENT_HINTS_CLIENT_HINTS_H_