Track all changed nodes during an update

content/browser/frame_host/render_frame_host_impl.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_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 1797 matching lines @@
       GetOrCreateBrowserAccessibilityManager();
 
     std::vector<AXEventNotificationDetails> details;
     details.reserve(params.size());
     for (size_t i = 0; i < params.size(); ++i) {
       const AccessibilityHostMsg_EventParams& param = params[i];
       AXEventNotificationDetails detail;
       detail.event_type = param.event_type;
       detail.id = param.id;
       detail.ax_tree_id = GetAXTreeID();
+      detail.event_from = param.event_from;
       if (param.update.has_tree_data) {
         detail.update.has_tree_data = true;
         ax_content_tree_data_ = param.update.tree_data;
         AXContentTreeDataToAXTreeData(&detail.update.tree_data);
       }
       detail.update.root_id = param.update.root_id;
       detail.update.node_id_to_clear = param.update.node_id_to_clear;
       detail.update.nodes.resize(param.update.nodes.size());
       for (size_t i = 0; i < param.update.nodes.size(); ++i) {
         AXContentNodeDataToAXNodeData(param.update.nodes[i],
@@ skipping 1227 matching lines @@
   web_bluetooth_service_->SetClientConnectionErrorHandler(base::Bind(
       &RenderFrameHostImpl::DeleteWebBluetoothService, base::Unretained(this)));
   return web_bluetooth_service_.get();
 }
 
 void RenderFrameHostImpl::DeleteWebBluetoothService() {
   web_bluetooth_service_.reset();
 }
 
 }  // namespace content