chromium/src/third_party/blink/public/mojom/page/record_content_to_visible_time_request.mojom

// Copyright 2020 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.

module blink.mojom;

import "mojo/public/mojom/base/time.mojom";

// Keeps track of parameters for recording metrics for content to visible time
// duration for different events. Here event indicates the reason for which the
// web contents are visible. These values are set on
// RenderWidgetHostView::SetRecordContentToVisibleTimeRequest. Note that
// |show_reason_tab_switching| and |show_reason_unoccluded| can both be true at
// the same time.
struct RecordContentToVisibleTimeRequest {
  // The time at which web contents become visible.
  mojo_base.mojom.TimeTicks event_start_time;
  // Indicates if the destination tab is loaded when initiating the tab switch.
  bool destination_is_loaded;
  // If |show_reason_tab_switching| is true, web contents has become visible
  // because of tab switching.
  bool show_reason_tab_switching = false;
  // If |show_reason_unoccluded| is true, then web contents has become visible
  // because window un-occlusion has happened.
  bool show_reason_unoccluded = false;
  // If |show_reason_bfcache_restore| is true, web contents has become visible
  // because of restoring a page from bfcache.
  bool show_reason_bfcache_restore = false;
};