chromium/content/browser/browsing_topics/header_util.cc

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/browser/browsing_topics/header_util.h"

#include "base/strings/strcat.h"
#include "components/browsing_topics/common/semantic_tree.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/page.h"
#include "content/public/common/content_client.h"
#include "net/http/http_request_headers.h"
#include "net/http/structured_headers.h"
#include "services/network/public/cpp/is_potentially_trustworthy.h"

namespace content {

namespace {

// The max number of digits in a topic. As new taxonomies are introduced and old
// topics are expired, the expectation is this value will gradually grow.
constexpr int kTopicMaxLength = …;

// The number of characters in a version string, e.g., chrome.1:1:10. This will
// grow as versions require more digits.
constexpr int kVersionMaxLength = …;

static_assert …;

static_assert …;

static_assert …;

}  // namespace

const char kBrowsingTopicsRequestHeaderKey[] = …;

std::string DeriveTopicsHeaderValue(
    const std::vector<blink::mojom::EpochTopicPtr>& topics,
    int num_versions_in_epochs) { … }

void HandleTopicsEligibleResponse(
    const network::mojom::ParsedHeadersPtr& parsed_headers,
    const url::Origin& caller_origin,
    RenderFrameHost& request_initiator_frame,
    browsing_topics::ApiCallerSource caller_source) { … }

}  // namespace content