Revert 74292 - Splits ChromeURLDataManager into 2 chunks:...

chrome/browser/dom_ui/chrome_url_data_manager_backend.h

-// Copyright (c) 2011 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_BROWSER_DOM_UI_CHROME_URL_DATA_MANAGER_BACKEND_H_
-#define CHROME_BROWSER_DOM_UI_CHROME_URL_DATA_MANAGER_BACKEND_H_
-#pragma once
-
-#include "base/basictypes.h"
-#include "base/ref_counted.h"
-#include "chrome/browser/dom_ui/chrome_url_data_manager.h"
-
-#include <map>
-#include <string>
-#include <vector>
-
-class FilePath;
-class GURL;
-class URLRequestChromeJob;
-
-namespace net {
-class URLRequest;
-class URLRequestJob;
-}
-
-// ChromeURLDataManagerBackend is used internally by ChromeURLDataManager on the
-// IO thread. In most cases you can use the API in ChromeURLDataManager and
-// ignore this class. ChromeURLDataManagerBackend is owned by
-// ChromeURLRequestContext.
-class ChromeURLDataManagerBackend {
- public:
-  typedef int RequestID;
-
-  ChromeURLDataManagerBackend();
-  ~ChromeURLDataManagerBackend();
-
-  // Invoked to register the protocol factories.
-  static void Register();
-
-  // Adds a DataSource to the collection of data sources.
-  void AddDataSource(ChromeURLDataManager::DataSource* source);
-
-  // Add/remove a path from the collection of file sources.
-  // A file source acts like a file:// URL to the specified path.
-  // Calling this from threads other the IO thread must be done via
-  // InvokeLater.
-  void AddFileSource(const std::string& source_name, const FilePath& path);
-
-  // DataSource invokes this. Sends the data to the URLRequest.
-  void DataAvailable(RequestID request_id, RefCountedMemory* bytes);
-
-  static net::URLRequestJob* Factory(net::URLRequest* request,
-                                     const std::string& scheme);
-
- private:
-  friend class URLRequestChromeJob;
-
-  typedef std::map<std::string,
-      scoped_refptr<ChromeURLDataManager::DataSource> > DataSourceMap;
-  typedef std::map<std::string, FilePath> FileSourceMap;
-  typedef std::map<RequestID, URLRequestChromeJob*> PendingRequestMap;
-
-  // Parse a URL into the components used to resolve its request.
-  void URLToRequest(const GURL& url, std::string* source, std::string* path);
-
-  // Translate a chrome resource URL into a local file path if there is one.
-  // Returns false if there is no file handler for this URL
-  bool URLToFilePath(const GURL& url, FilePath* file_path);
-
-  // Called by the job when it's starting up.
-  // Returns false if |url| is not a URL managed by this object.
-  bool StartRequest(const GURL& url, URLRequestChromeJob* job);
-
-  // Remove a request from the list of pending requests.
-  void RemoveRequest(URLRequestChromeJob* job);
-
-  // Returns true if the job exists in |pending_requests_|. False otherwise.
-  // Called by ~URLRequestChromeJob to verify that |pending_requests_| is kept
-  // up to date.
-  bool HasPendingJob(URLRequestChromeJob* job) const;
-
-  // File sources of data, keyed by source name (e.g. "inspector").
-  FileSourceMap file_sources_;
-
-  // Custom sources of data, keyed by source path (e.g. "favicon").
-  DataSourceMap data_sources_;
-
-  // All pending URLRequestChromeJobs, keyed by ID of the request.
-  // URLRequestChromeJob calls into this object when it's constructed and
-  // destructed to ensure that the pointers in this map remain valid.
-  PendingRequestMap pending_requests_;
-
-  // The ID we'll use for the next request we receive.
-  RequestID next_request_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(ChromeURLDataManagerBackend);
-};
-
-#endif  // CHROME_BROWSER_DOM_UI_CHROME_URL_DATA_MANAGER_BACKEND_H_