Add content/browser/loader/ for resource loading related classes.

content/browser/renderer_host/doomed_resource_handler.h

-// Copyright (c) 2012 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_RENDERER_HOST_DOOMED_RESOURCE_HANDLER_H_
-#define CONTENT_BROWSER_RENDERER_HOST_DOOMED_RESOURCE_HANDLER_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "content/browser/renderer_host/resource_handler.h"
-
-namespace content {
-
-// ResourceHandler that DCHECKs on all events but canceling and failing of
-// requests while activated for a URLRequest.
-class DoomedResourceHandler : public ResourceHandler {
- public:
-  // As the DoomedResourceHandler is constructed and substituted from code
-  // of another ResourceHandler, we need to make sure that this other handler
-  // does not lose its last reference and gets destroyed by being substituted.
-  // Therefore, we retain a reference to |old_handler| that prevents the
-  // destruction.
-  explicit DoomedResourceHandler(scoped_ptr<ResourceHandler> old_handler);
-  virtual ~DoomedResourceHandler();
-
-  // ResourceHandler implementation:
-  virtual bool OnUploadProgress(int request_id,
-                                uint64 position,
-                                uint64 size) OVERRIDE;
-  virtual bool OnRequestRedirected(int request_id,
-                                   const GURL& new_url,
-                                   ResourceResponse* response,
-                                   bool* defer) OVERRIDE;
-  virtual bool OnResponseStarted(int request_id,
-                                 ResourceResponse* response,
-                                 bool* defer) OVERRIDE;
-  virtual bool OnWillStart(int request_id,
-                           const GURL& url,
-                           bool* defer) OVERRIDE;
-  virtual bool OnWillRead(int request_id,
-                          net::IOBuffer** buf,
-                          int* buf_size,
-                          int min_size) OVERRIDE;
-  virtual bool OnReadCompleted(int request_id,
-                               int bytes_read,
-                               bool* defer) OVERRIDE;
-  virtual bool OnResponseCompleted(int request_id,
-                                   const net::URLRequestStatus& status,
-                                   const std::string& security_info) OVERRIDE;
-  virtual void OnDataDownloaded(int request_id,
-                                int bytes_downloaded) OVERRIDE;
-
- private:
-  scoped_ptr<ResourceHandler> old_handler_;
-
-  DISALLOW_COPY_AND_ASSIGN(DoomedResourceHandler);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_DOOMED_RESOURCE_HANDLER_H_