Correctly find root RWHV from a nested WebContents

content/browser/frame_host/render_frame_host_manager.cc

Index: content/browser/frame_host/render_frame_host_manager.cc
diff --git a/content/browser/frame_host/render_frame_host_manager.cc b/content/browser/frame_host/render_frame_host_manager.cc
index 7e53ce84586f542c2573c4409bf1691a49415278..7d89f5e4a0ffb6a93324a67d2ba2cf44697448f5 100644
--- a/content/browser/frame_host/render_frame_host_manager.cc
+++ b/content/browser/frame_host/render_frame_host_manager.cc
@@ -316,6 +316,12 @@ RenderFrameHostManager::GetOuterRenderWidgetHostForKeyboardInput() {
       ->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;