Keep track of fixed positioning in accessibility tree.

chrome/renderer/extensions/automation_internal_custom_bindings.cc

 // Copyright 2014 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 "chrome/renderer/extensions/automation_internal_custom_bindings.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 1172 matching lines @@
   int tree_id = params.tree_id;
   auto iter = tree_id_to_tree_cache_map_.find(tree_id);
   if (iter == tree_id_to_tree_cache_map_.end())
     return;
   TreeCache* cache = iter->second;
   ui::AXNode* node = cache->tree.GetFromId(params.id);
   if (!node)
     return;
   node->SetLocation(params.new_location.offset_container_id,
                     params.new_location.bounds,
-                    params.new_location.transform.get());
+                    params.new_location.transform.get(),
+                    params.new_location.is_fixed_positioned);
 }
 
 void AutomationInternalCustomBindings::OnNodeDataWillChange(
     ui::AXTree* tree,
     const ui::AXNodeData& old_node_data,
     const ui::AXNodeData& new_node_data) {
   if (old_node_data.GetStringAttribute(ui::AX_ATTR_NAME) !=
       new_node_data.GetStringAttribute(ui::AX_ATTR_NAME))
     text_changed_node_ids_.push_back(new_node_data.id);
 }
@@ skipping 195 matching lines @@
     for (auto id : ids)
       nodes->AppendInteger(id);
     args.Append(std::move(nodes));
   }
 
   bindings_system_->DispatchEventInContext("automationInternal.onNodesRemoved",
                                            &args, nullptr, context());
 }
 
 }  // namespace extensions