Change AuthenticatingURLLoader to be a URLLoaderInterceptor

services/authenticating_url_loader/authenticating_url_loader_impl.h

-// Copyright 2014 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 SERVICES_AUTHENTICATING_URL_LOADER_AUTHENTICATING_URL_LOADER_IMPL_H_
-#define SERVICES_AUTHENTICATING_URL_LOADER_AUTHENTICATING_URL_LOADER_IMPL_H_
-
-#include "mojo/public/cpp/bindings/binding.h"
-#include "mojo/public/cpp/bindings/error_handler.h"
-#include "mojo/services/authenticating_url_loader/public/interfaces/authenticating_url_loader.mojom.h"
-#include "mojo/services/network/public/interfaces/url_loader.mojom.h"
-#include "services/authenticating_url_loader/authenticating_url_loader_factory_impl.h"
-#include "url/gurl.h"
-
-namespace mojo {
-
-class NetworkService;
-
-enum RequestAuthorizationState {
-  REQUEST_INITIAL,
-  REQUEST_USED_CURRENT_AUTH_SERVICE_TOKEN,
-  REQUEST_USED_FRESH_AUTH_SERVICE_TOKEN,
-};
-
-class AuthenticatingURLLoaderImpl : public AuthenticatingURLLoader,
-                                    public ErrorHandler {
- public:
-  AuthenticatingURLLoaderImpl(InterfaceRequest<AuthenticatingURLLoader> request,
-                              AuthenticatingURLLoaderFactoryImpl* factory);
-  ~AuthenticatingURLLoaderImpl() override;
-
- private:
-  // AuthenticatingURLLoader methods:
-  void Start(URLRequestPtr request,
-             const Callback<void(URLResponsePtr)>& callback) override;
-  void FollowRedirect(const Callback<void(URLResponsePtr)>& callback) override;
-
-  // ErrorHandler methods:
-  void OnConnectionError() override;
-
-  void StartNetworkRequest(URLRequestPtr request);
-
-  void OnLoadComplete(URLResponsePtr response);
-
-  void FollowRedirectInternal();
-
-  void OnOAuth2TokenReceived(std::string token);
-
-  Binding<AuthenticatingURLLoader> binding_;
-  AuthenticatingURLLoaderFactoryImpl* factory_;
-  URLLoaderPtr url_loader_;
-  URLResponsePtr pending_response_;
-  RequestAuthorizationState request_authorization_state_;
-  GURL url_;
-  bool auto_follow_redirects_;
-  bool bypass_cache_;
-  Array<HttpHeaderPtr> headers_;
-  Callback<void(URLResponsePtr)> pending_request_callback_;
-};
-
-}  // namespace mojo
-
-#endif  // SERVICES_AUTHENTICATING_URL_LOADER_AUTHENTICATING_URL_LOADER_IMPL_H_