Implement ResourceQueue, an object that makes it easy to delay starting

chrome/browser/renderer_host/download_resource_handler.h

 // Copyright (c) 2006-2008 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_RENDERER_HOST_DOWNLOAD_RESOURCE_HANDLER_H_
 #define CHROME_BROWSER_RENDERER_HOST_DOWNLOAD_RESOURCE_HANDLER_H_
 
 #include <string>
 
-#include "chrome/browser/renderer_host/resource_dispatcher_host.h"
+#include "base/timer.h"
+#include "chrome/browser/renderer_host/global_request_id.h"
 #include "chrome/browser/renderer_host/resource_handler.h"
 
+class DownloadFileManager;
+class ResourceDispatcherHost;
+class URLRequest;
 struct DownloadBuffer;
 
 // Forwards data to the download thread.
 class DownloadResourceHandler : public ResourceHandler {
  public:
   DownloadResourceHandler(ResourceDispatcherHost* rdh,
                           int render_process_host_id,
                           int render_view_id,
                           int request_id,
                           const GURL& url,
@@ skipping 27 matching lines @@
   void set_content_disposition(const std::string& content_disposition);
 
   void CheckWriteProgress();
 
  private:
   ~DownloadResourceHandler() {}
 
   void StartPauseTimer();
 
   int download_id_;
-  ResourceDispatcherHost::GlobalRequestID global_id_;
+  GlobalRequestID global_id_;
   int render_view_id_;
   scoped_refptr<net::IOBuffer> read_buffer_;
   std::string content_disposition_;
   GURL url_;
   int64 content_length_;
   DownloadFileManager* download_manager_;
   URLRequest* request_;
   bool save_as_;  // Request was initiated via "Save As" by the user.
   DownloadBuffer* buffer_;
   ResourceDispatcherHost* rdh_;
   bool is_paused_;
   base::OneShotTimer<DownloadResourceHandler> pause_timer_;
 
   static const int kReadBufSize = 32768;  // bytes
   static const size_t kLoadsToWrite = 100;  // number of data buffers queued
   static const int kThrottleTimeMs = 200;  // milliseconds
 
   DISALLOW_COPY_AND_ASSIGN(DownloadResourceHandler);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_DOWNLOAD_RESOURCE_HANDLER_H_