chromium/ui/accessibility/ax_tree_update_util.cc

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/accessibility/ax_tree_update_util.h"

#include "base/metrics/histogram_macros.h"
#include "ui/accessibility/accessibility_features.h"
#include "ui/accessibility/ax_tree_update.h"

namespace ui {

// Two tree updates can be merged into one if the second one
// doesn't clear a subtree, doesn't have new tree data, and
// doesn't have a new root id - in other words the second tree
// update consists of only changes to nodes.
bool AXTreeUpdatesCanBeMerged(const AXTreeUpdate& u1, const AXTreeUpdate& u2) { … }

bool MergeAXTreeUpdates(const std::vector<AXTreeUpdate>& src,
                        std::vector<AXTreeUpdate>* dst) { … }

}  // namespace ui