Remove magic iframe load transfer support.

content/browser/renderer_host/resource_request_info_impl.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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RESOURCE_REQUEST_INFO_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RESOURCE_REQUEST_INFO_IMPL_H_
 #pragma once
 
 #include <string>
 
@@ skipping 102 matching lines @@
   SSLClientAuthHandler* ssl_client_auth_handler() const {
     return ssl_client_auth_handler_.get();
   }
   void set_ssl_client_auth_handler(SSLClientAuthHandler* s);
 
   // Identifies the type of process (renderer, plugin, etc.) making the request.
   ProcessType process_type() const {
     return process_type_;
   }
 
-  // The route_id of pending request can change when it is transferred to a new
-  // page (as in iframe transfer using adoptNode JS API).
-  void set_route_id(int route_id) { route_id_ = route_id; }
-
   // Number of messages we've sent to the renderer that we haven't gotten an
   // ACK for. This allows us to avoid having too many messages in flight.
   int pending_data_count() const { return pending_data_count_; }
   void IncrementPendingDataCount() { pending_data_count_++; }
   void DecrementPendingDataCount() { pending_data_count_--; }
 
   // Downloads are allowed only as a top level request.
   bool allow_download() const { return allow_download_; }
 
   bool has_user_gesture() const { return has_user_gesture_; }
@@ skipping 114 matching lines @@
   bool called_on_response_started_;
   bool has_started_reading_;
   int paused_read_bytes_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceRequestInfoImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RESOURCE_REQUEST_INFO_IMPL_H_