Send a subtree of same-process PageStates for back/forward child frames.

content/browser/frame_host/navigator_impl.cc

 // Copyright 2013 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/navigator_impl.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 407 matching lines @@
       FrameMsg_Navigate_Type::Value navigation_type = GetNavigationType(
           controller_->GetBrowserContext(), entry, reload_type);
       dest_render_frame_host->Navigate(
           entry.ConstructCommonNavigationParams(
               frame_entry, post_body, dest_url, dest_referrer, navigation_type,
               lofi_state, navigation_start),
           entry.ConstructStartNavigationParams(),
           entry.ConstructRequestNavigationParams(
               frame_entry, is_same_document_history_load,
               is_history_navigation_in_new_child,
-              entry.GetSubframeUniqueNames(frame_tree_node),
+              entry.GetSubtreePageStates(frame_tree_node),
               frame_tree_node->has_committed_real_load(),
               controller_->GetPendingEntryIndex() == -1,
               controller_->GetIndexOfEntry(&entry),
               controller_->GetLastCommittedEntryIndex(),
               controller_->GetEntryCount()));
     } else {
       dest_render_frame_host->navigation_handle()->set_is_transferring(false);
     }
   }
 
@@ skipping 828 matching lines @@
     if (navigation_handle)
       navigation_handle->update_entry_id_for_transfer(entry->GetUniqueID());
 
     controller_->SetPendingEntry(std::move(entry));
     if (delegate_)
       delegate_->NotifyChangedNavigationState(content::INVALIDATE_TYPE_URL);
   }
 }
 
 }  // namespace content