Introduce browser side FrameTreeNodeBlameContext

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 <stddef.h>
 
 #include <queue>
 #include <utility>
@@ skipping 87 matching lines @@
                               render_frame_delegate,
                               render_widget_delegate,
                               manager_delegate,
                               // The top-level frame must always be in a
                               // document scope.
                               blink::WebTreeScopeType::Document,
                               std::string(),
                               std::string(),
                               blink::WebFrameOwnerProperties())),
       focused_frame_tree_node_id_(-1),
-      load_progress_(0.0) {}
+      load_progress_(0.0) {
+  root_->InitializeBlameContext();
+}
 
 FrameTree::~FrameTree() {
   delete root_;
   root_ = nullptr;
 }
 
 FrameTreeNode* FrameTree::FindByID(int frame_tree_node_id) {
   for (FrameTreeNode* node : Nodes()) {
     if (node->frame_tree_node_id() == frame_tree_node_id)
       return node;
@@ skipping 307 matching lines @@
   // This is only used to set page-level focus in cross-process subframes, and
   // requests to set focus in main frame's SiteInstance are ignored.
   if (instance != root_manager->current_frame_host()->GetSiteInstance()) {
     RenderFrameProxyHost* proxy =
         root_manager->GetRenderFrameProxyHost(instance);
     proxy->Send(new InputMsg_SetFocus(proxy->GetRoutingID(), is_focused));
   }
 }
 
 }  // namespace content