chromium/third_party/blink/renderer/core/layout/layout_shift_tracker.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_SHIFT_TRACKER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_SHIFT_TRACKER_H_

#include "base/check_op.h"
#include "base/time/time.h"
#include "cc/base/region.h"
#include "third_party/blink/public/platform/web_vector.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/layout/geometry/physical_rect.h"
#include "third_party/blink/renderer/core/layout/layout_shift_region.h"
#include "third_party/blink/renderer/core/scroll/scroll_types.h"
#include "third_party/blink/renderer/core/timing/layout_shift.h"
#include "third_party/blink/renderer/platform/graphics/dom_node_id.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_hash_map.h"
#include "third_party/blink/renderer/platform/timer.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "ui/gfx/geometry/rect.h"

namespace blink {

class LayoutBox;
class LayoutObject;
class LayoutText;
class LocalFrameView;
class PropertyTreeStateOrAlias;
class TracedValue;
class WebInputEvent;

// Tracks "layout shifts" from layout objects changing their visual location
// between animation frames. See https://github.com/WICG/layout-instability.
class CORE_EXPORT LayoutShiftTracker final
    : public GarbageCollected<LayoutShiftTracker> { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_SHIFT_TRACKER_H_