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

chrome/browser/prerender/prerender_contents.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 "chrome/browser/prerender/prerender_contents.h"
 
 #include <algorithm>
 #include <functional>
 #include <utility>
 
@@ skipping 545 matching lines @@
   Destroy(FINAL_STATUS_RENDERER_CRASHED);
 }
 
 void PrerenderContents::DidStopLoading(
     content::RenderViewHost* render_view_host) {
   has_stopped_loading_ = true;
 }
 
 void PrerenderContents::DidStartProvisionalLoadForFrame(
     int64 frame_id,
+    int64 parent_frame_id,
     bool is_main_frame,
     const GURL& validated_url,
     bool is_error_page,
     RenderViewHost* render_view_host) {
   if (is_main_frame) {
     if (!AddAliasURL(validated_url))
       return;
 
     // Usually, this event fires if the user clicks or enters a new URL.
     // Neither of these can happen in the case of an invisible prerender.
@@ skipping 128 matching lines @@
 bool PrerenderContents::IsCrossSiteNavigationPending() const {
   if (!prerender_contents_.get() || !prerender_contents_->web_contents())
     return false;
   const WebContents* web_contents = prerender_contents_->web_contents();
   return (web_contents->GetSiteInstance() !=
           web_contents->GetPendingSiteInstance());
 }
 
 
 }  // namespace prerender