Add experimental code behind a flag for Content Size Policy

content/browser/loader/resource_request_info_impl.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/loader/resource_request_info_impl.h"
 
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/loader/global_routing_id.h"
 #include "content/browser/loader/resource_message_filter.h"
 #include "content/browser/web_contents/web_contents_impl.h"
@@ skipping 307 matching lines @@
 }
 
 GlobalRequestID ResourceRequestInfoImpl::GetGlobalRequestID() const {
   return GlobalRequestID(child_id_, request_id_);
 }
 
 GlobalRoutingID ResourceRequestInfoImpl::GetGlobalRoutingID() const {
   return GlobalRoutingID(child_id_, route_id_);
 }
 
+GlobalFrameRoutingId ResourceRequestInfoImpl::GetGlobalFrameRoutingId() const {
+  return GlobalFrameRoutingId(child_id_, render_frame_id_);
+}
+
 void ResourceRequestInfoImpl::UpdateForTransfer(
     int child_id,
     int route_id,
     int render_frame_id,
     int origin_pid,
     int request_id,
     base::WeakPtr<ResourceMessageFilter> filter) {
   child_id_ = child_id;
   route_id_ = route_id;
   render_frame_id_ = render_frame_id;
   origin_pid_ = origin_pid;
   request_id_ = request_id;
   filter_ = filter;
 }
 
 void ResourceRequestInfoImpl::ResetBody() {
   body_ = nullptr;
 }
 
 }  // namespace content