Factor out dependncy on download throttling from core download code.

chrome/browser/browser_process.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.
 
 // This interface is for managing the global services of the application. Each
 // service is lazily created when requested the first time. The service getters
 // will return NULL if the service is not available, so callers must check for
 // this condition.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_H_
@@ skipping 166 matching lines @@
       background_printing_manager() = 0;
 
   virtual GoogleURLTracker* google_url_tracker() = 0;
   virtual IntranetRedirectDetector* intranet_redirect_detector() = 0;
 
   // Returns the locale used by the application.
   virtual const std::string& GetApplicationLocale() = 0;
   virtual void SetApplicationLocale(const std::string& locale) = 0;
 
   virtual DownloadStatusUpdater* download_status_updater() = 0;
+  virtual DownloadRequestLimiter* download_request_limiter() = 0;
 
   // Returns the object that watches for changes in the closeable state of tab.
   virtual TabCloseableStateWatcher* tab_closeable_state_watcher() = 0;
 
   // Returns the object that manages background applications.
   virtual BackgroundModeManager* background_mode_manager() = 0;
 
   // Returns the StatusTray, which provides an API for displaying status icons
   // in the system status tray. Returns NULL if status icons are not supported
   // on this platform (or this is a unit test).
@@ skipping 50 matching lines @@
  private:
   // Used for testing plugin data removal at shutdown.
   std::string plugin_data_remover_mime_type_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserProcess);
 };
 
 extern BrowserProcess* g_browser_process;
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_H_