Replicate whether a frame is in a document or shadow tree.

content/browser/frame_host/frame_tree.h

Index: content/browser/frame_host/frame_tree.h
diff --git a/content/browser/frame_host/frame_tree.h b/content/browser/frame_host/frame_tree.h
index c853dd5b39160e73ac48943d6f9fdf98c6736196..f5f1e51b31bcdf2b71beceae385beb97dd6452f8 100644
--- a/content/browser/frame_host/frame_tree.h
+++ b/content/browser/frame_host/frame_tree.h
@@ -80,6 +80,7 @@ class CONTENT_EXPORT FrameTree {
   RenderFrameHostImpl* AddFrame(FrameTreeNode* parent,
                                 int process_id,
                                 int new_routing_id,
+                                blink::WebTreeScopeType scope,
                                 const std::string& frame_name,
                                 SandboxFlags sandbox_flags);
   void RemoveFrame(FrameTreeNode* child);