Network service: SafeBrowsing check for frame-resources from browser.

chrome/renderer/safe_browsing/safe_browsing_url_loader_throttle.h

-// Copyright 2017 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 CHROME_RENDERER_SAFE_BROWSING_SAFE_BROWSING_URL_LOADER_THROTTLE_H_
-#define CHROME_RENDERER_SAFE_BROWSING_SAFE_BROWSING_URL_LOADER_THROTTLE_H_
-
-#include "base/memory/weak_ptr.h"
-#include "components/safe_browsing/common/safe_browsing.mojom.h"
-#include "content/public/common/url_loader_throttle.h"
-
-namespace chrome {
-namespace mojom {
-class SafeBrowsing;
-}
-}
-
-namespace safe_browsing {
-
-// SafeBrowsingURLLoaderThrottle queries SafeBrowsing to determine whether the
-// URL and also redirect URLs are safe to load. It defers response processing
-// until all URL checks are completed; cancels the load if any URLs turn out to
-// be bad.
-class SafeBrowsingURLLoaderThrottle : public content::URLLoaderThrottle {
- public:
-  // |safe_browsing| must stay alive until WillStartRequest() (if it is called)
-  // or the end of this object.
-  // |render_frame_id| is used for displaying SafeBrowsing UI when necessary.
-  SafeBrowsingURLLoaderThrottle(mojom::SafeBrowsing* safe_browsing,
-                                int render_frame_id);
-  ~SafeBrowsingURLLoaderThrottle() override;
-
-  // content::URLLoaderThrottle implementation.
-  void WillStartRequest(const GURL& url,
-                        int load_flags,
-                        content::ResourceType resource_type,
-                        bool* defer) override;
-  void WillRedirectRequest(const net::RedirectInfo& redirect_info,
-                           bool* defer) override;
-  void WillProcessResponse(bool* defer) override;
-
- private:
-  void OnCheckUrlResult(bool safe);
-
-  void OnConnectionError();
-
-  mojom::SafeBrowsing* safe_browsing_;
-  const int render_frame_id_;
-
-  mojom::SafeBrowsingUrlCheckerPtr url_checker_;
-
-  size_t pending_checks_ = 0;
-  bool blocked_ = false;
-
-  base::WeakPtrFactory<SafeBrowsingURLLoaderThrottle> weak_factory_;
-};
-
-}  // namespace safe_browsing
-
-#endif  // CHROME_RENDERER_SAFE_BROWSING_SAFE_BROWSING_URL_LOADER_THROTTLE_H_