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

content/browser/frame_host/frame_tree.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/frame_tree.h"
 
 #include <queue>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 90 matching lines @@
     : render_frame_delegate_(render_frame_delegate),
       render_view_delegate_(render_view_delegate),
       render_widget_delegate_(render_widget_delegate),
       manager_delegate_(manager_delegate),
       root_(new FrameTreeNode(this,
                               navigator,
                               render_frame_delegate,
                               render_view_delegate,
                               render_widget_delegate,
                               manager_delegate,
+                              // The top-level frame must always be in a
+                              // document scope.
+                              blink::WebTreeScopeType::Document,
                               std::string(),
                               SandboxFlags::NONE)),
       focused_frame_tree_node_id_(-1),
       load_progress_(0.0) {
 }
 
 FrameTree::~FrameTree() {
 }
 
 FrameTreeNode* FrameTree::FindByID(int frame_tree_node_id) {
@@ skipping 52 matching lines @@
       break;
 
     for (size_t i = 0; i < node->child_count(); ++i)
       queue.push(node->child_at(i));
   }
 }
 
 RenderFrameHostImpl* FrameTree::AddFrame(FrameTreeNode* parent,
                                          int process_id,
                                          int new_routing_id,
+                                         blink::WebTreeScopeType scope,
                                          const std::string& frame_name,
                                          SandboxFlags sandbox_flags) {
   // A child frame always starts with an initial empty document, which means
   // it is in the same SiteInstance as the parent frame. Ensure that the process
   // which requested a child frame to be added is the same as the process of the
   // parent node.
   // We return nullptr if this is not the case, which can happen in a race if an
   // old RFH sends a CreateChildFrame message as we're swapping to a new RFH.
   if (parent->current_frame_host()->GetProcess()->GetID() != process_id)
     return nullptr;
 
-  scoped_ptr<FrameTreeNode> node(new FrameTreeNode(
-      this, parent->navigator(), render_frame_delegate_, render_view_delegate_,
-      render_widget_delegate_, manager_delegate_, frame_name, sandbox_flags));
+  scoped_ptr<FrameTreeNode> node(
+      new FrameTreeNode(this, parent->navigator(), render_frame_delegate_,
+                        render_view_delegate_, render_widget_delegate_,
+                        manager_delegate_, scope, frame_name, sandbox_flags));
   FrameTreeNode* node_ptr = node.get();
   // AddChild is what creates the RenderFrameHost.
   parent->AddChild(node.Pass(), process_id, new_routing_id);
   return node_ptr->current_frame_host();
 }
 
 void FrameTree::RemoveFrame(FrameTreeNode* child) {
   FrameTreeNode* parent = child->parent();
   if (!parent) {
     NOTREACHED() << "Unexpected RemoveFrame call for main frame.";
@@ skipping 182 matching lines @@
   load_progress_ = 0.0;
 }
 
 bool FrameTree::IsLoading() {
   bool is_loading = false;
   ForEach(base::Bind(&IsNodeLoading, &is_loading));
   return is_loading;
 }
 
 }  // namespace content