When starting a provisional load include the parent frame ID in the IPC and pass it down the th WCO…

content/renderer/render_view_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/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
@@ skipping 3218 matching lines @@
     // Take note of AUTO_SUBFRAME loads here, so that we can know how to
     // load an error page.  See didFailProvisionalLoad.
     document_state->navigation_state()->set_transition_type(
         content::PAGE_TRANSITION_AUTO_SUBFRAME);
   }
 
   FOR_EACH_OBSERVER(
       RenderViewObserver, observers_, DidStartProvisionalLoad(frame));
 
   Send(new ViewHostMsg_DidStartProvisionalLoadForFrame(
-       routing_id_, frame->identifier(), is_top_most, GetOpenerUrl(),
-       ds->request().url()));
+       routing_id_, frame->identifier(),
+       frame->parent() ? frame->parent()->identifier() : -1,
+       is_top_most, GetOpenerUrl(), ds->request().url()));
 }
 
 void RenderViewImpl::didReceiveServerRedirectForProvisionalLoad(
     WebFrame* frame) {
   if (frame->parent())
     return;
   // Received a redirect on the main frame.
   WebDataSource* data_source = frame->provisionalDataSource();
   if (!data_source) {
     // Should only be invoked when we have a data source.
@@ skipping 3085 matching lines @@
 
   updating_frame_tree_ = true;
   active_frame_id_map_.clear();
 
   target_process_id_ = process_id;
   target_routing_id_ = route_id;
   CreateFrameTree(webview()->mainFrame(), frames);
 
   updating_frame_tree_ = false;
 }