content/renderer/local_resource_url_loader_factory.h

// Copyright 2025 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_RENDERER_LOCAL_RESOURCE_URL_LOADER_FACTORY_H_
#define CONTENT_RENDERER_LOCAL_RESOURCE_URL_LOADER_FACTORY_H_

#include <cstdint>
#include <memory>

#include "base/memory/ref_counted.h"
#include "base/memory/scoped_refptr.h"
#include "base/task/sequenced_task_runner.h"
#include "base/threading/sequence_bound.h"
#include "content/common/content_export.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "net/socket/socket.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/mojom/url_loader.mojom.h"
#include "services/network/public/mojom/url_loader_factory.mojom.h"
#include "third_party/blink/public/mojom/loader/local_resource_loader_config.mojom.h"
#include "url/origin.h"

namespace content {

// LocalResourceURLLoaderFactory is a URLLoaderFactory that lives in the
// renderer process and fetches resources directly from the ResourceBundle,
// enabling renderers to load bundled resources entirely in-process. This can
// significantly reduce IPC overhead for WebUIs, whose resources come almost
// exclusively from the ResourceBundle.
class CONTENT_EXPORT LocalResourceURLLoaderFactory
    : public network::mojom::URLLoaderFactory {
 public:
  struct Source {
    Source(blink::mojom::LocalResourceSourcePtr source,
           std::map<std::string, std::string> replacement_strings);
    Source(Source&& other);
    Source& operator=(Source&& other);
    ~Source();
    blink::mojom::LocalResourceSourcePtr source;