Move ownership of source SiteInstance to the FrameNavigationEntry.

content/browser/frame_host/frame_navigation_entry.cc

 // Copyright 2015 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/frame_host/frame_navigation_entry.h"
 
 #include <utility>
 
 namespace content {
 
@@ skipping 17 matching lines @@
       referrer_(referrer),
       method_(method),
       post_id_(post_id) {}
 
 FrameNavigationEntry::~FrameNavigationEntry() {
 }
 
 FrameNavigationEntry* FrameNavigationEntry::Clone() const {
   FrameNavigationEntry* copy = new FrameNavigationEntry();
   copy->UpdateEntry(frame_unique_name_, item_sequence_number_,
-                    document_sequence_number_, site_instance_.get(), url_,
-                    referrer_, page_state_, method_, post_id_);
+                    document_sequence_number_, source_site_instance_.get(),
+                    site_instance_.get(), url_, referrer_, page_state_, method_,
+                    post_id_);
   return copy;
 }
 
 void FrameNavigationEntry::UpdateEntry(const std::string& frame_unique_name,
                                        int64_t item_sequence_number,
                                        int64_t document_sequence_number,
+                                       SiteInstanceImpl* source_site_instance,
                                        SiteInstanceImpl* site_instance,
                                        const GURL& url,
                                        const Referrer& referrer,
                                        const PageState& page_state,
                                        const std::string& method,
                                        int64_t post_id) {
   frame_unique_name_ = frame_unique_name;
   item_sequence_number_ = item_sequence_number;
   document_sequence_number_ = document_sequence_number;
+  source_site_instance_ = source_site_instance;
   site_instance_ = site_instance;
   url_ = url;
   referrer_ = referrer;
   page_state_ = page_state;
   method_ = method;
   post_id_ = post_id;
 }
 
 void FrameNavigationEntry::set_item_sequence_number(
     int64_t item_sequence_number) {
   // TODO(creis): Assert that this does not change after being assigned, once
   // location.replace is classified as NEW_PAGE rather than EXISTING_PAGE.
   // Same for document sequence number.  See https://crbug.com/596707.
   item_sequence_number_ = item_sequence_number;
 }
 
 void FrameNavigationEntry::set_document_sequence_number(
     int64_t document_sequence_number) {
   document_sequence_number_ = document_sequence_number;
 }
 
 }  // namespace content