Correctly find root RWHV from a nested WebContents

content/browser/frame_host/render_frame_host_manager.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/render_frame_host_manager.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 298 matching lines @@
 
   FrameTreeNode* outer_contents_frame_tree_node =
       FrameTreeNode::GloballyFindByID(
           delegate_->GetOuterDelegateFrameTreeNodeID());
   return outer_contents_frame_tree_node->parent()
       ->current_frame_host()
       ->render_view_host()
       ->GetWidget();
 }
 
+FrameTreeNode* RenderFrameHostManager::GetOuterDelegateNode() {
+  int outer_contents_frame_tree_node_id =
+      delegate_->GetOuterDelegateFrameTreeNodeID();
+  return FrameTreeNode::GloballyFindByID(outer_contents_frame_tree_node_id);
+}
+
 RenderFrameProxyHost* RenderFrameHostManager::GetProxyToParent() {
   if (frame_tree_node_->IsMainFrame())
     return nullptr;
 
   return proxy_hosts_->Get(frame_tree_node_->parent()
                                ->render_manager()
                                ->current_frame_host()
                                ->GetSiteInstance()
                                ->GetId());
 }
@@ skipping 2340 matching lines @@
 int RenderFrameHostManager::GetOpenerRoutingID(SiteInstance* instance) {
   if (!frame_tree_node_->opener())
     return MSG_ROUTING_NONE;
 
   return frame_tree_node_->opener()
       ->render_manager()
       ->GetRoutingIdForSiteInstance(instance);
 }
 
 }  // namespace content