Refactor the guts of ResourceDispatcherHostImpl into a new class named

content/browser/renderer_host/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.
 
 // This is the browser side of the resource dispatcher, it receives requests
 // from the RenderProcessHosts, and dispatches them to URLRequests. It then
 // fowards the messages from the URLRequests back to the correct process for
 // handling.
 //
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
@@ skipping 10 matching lines @@
 #include "content/public/browser/browser_thread.h"
 
 class GURL;
 
 namespace net {
 class IOBuffer;
 class URLRequestStatus;
 }  // namespace net
 
 namespace content {
+class ResourceController;
 struct ResourceResponse;
 
 // The resource dispatcher host uses this interface to process network events
 // for an URLRequest instance.  A ResourceHandler's lifetime is bound to its
 // associated URLRequest.
 class CONTENT_EXPORT ResourceHandler
     : public NON_EXPORTED_BASE(base::NonThreadSafe) {
  public:
   virtual ~ResourceHandler() {}
 
+  // Sets the controller for this handler.
+  virtual void SetController(ResourceController* controller);
+
   // Called as upload progress is made.  The return value is ignored.
   virtual bool OnUploadProgress(int request_id,
                                 uint64 position,
                                 uint64 size) = 0;
 
   // The request was redirected to a new URL.  |*defer| has an initial value of
   // false.  Set |*defer| to true to defer the redirect.  The redirect may be
   // followed later on via ResourceDispatcherHost::FollowDeferredRedirect.  If
   // the handler returns false, then the request is cancelled.
   virtual bool OnRequestRedirected(int request_id, const GURL& url,
@@ skipping 43 matching lines @@
   // the request will be destroyed upon return.
   virtual bool OnResponseCompleted(int request_id,
                                    const net::URLRequestStatus& status,
                                    const std::string& security_info) = 0;
 
   // This notification is synthesized by the RedirectToFileResourceHandler
   // to indicate progress of 'download_to_file' requests. OnReadCompleted
   // calls are consumed by the RedirectToFileResourceHandler and replaced
   // with OnDataDownloaded calls.
   virtual void OnDataDownloaded(int request_id, int bytes_downloaded) {}
+
+ protected:
+  ResourceHandler() : controller_(NULL) {}
+  ResourceController* controller() { return controller_; }
+
+ private:
+  ResourceController* controller_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RESOURCE_HANDLER_H_