Refactor the guts of ResourceDispatcherHostImpl into a new class named

content/browser/renderer_host/layered_resource_handler.cc

 // 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.
 
 #include "content/browser/renderer_host/layered_resource_handler.h"
 
 #include "base/logging.h"
 
 namespace content {
 
 LayeredResourceHandler::LayeredResourceHandler(
     scoped_ptr<ResourceHandler> next_handler)
     : next_handler_(next_handler.Pass()) {
 }
 
 LayeredResourceHandler::~LayeredResourceHandler() {
 }
 
+void LayeredResourceHandler::SetController(ResourceController* controller) {
+  ResourceHandler::SetController(controller);
+
+  // Pass the controller down to the next handler.  This method is intended to
+  // be overriden by subclasses of LayeredResourceHandler that need to insert a
+  // different ResourceController.
+
+  DCHECK(next_handler_.get());
+  next_handler_->SetController(controller);
+}
+
 bool LayeredResourceHandler::OnUploadProgress(int request_id, uint64 position,
                                               uint64 size) {
   DCHECK(next_handler_.get());
   return next_handler_->OnUploadProgress(request_id, position, size);
 }
 
 bool LayeredResourceHandler::OnRequestRedirected(int request_id,
                                                  const GURL& url,
                                                  ResourceResponse* response,
                                                  bool* defer) {
@@ skipping 34 matching lines @@
   return next_handler_->OnResponseCompleted(request_id, status, security_info);
 }
 
 void LayeredResourceHandler::OnDataDownloaded(int request_id,
                                               int bytes_downloaded) {
   DCHECK(next_handler_.get());
   next_handler_->OnDataDownloaded(request_id, bytes_downloaded);
 }
 
 }  // namespace content