Begin tracking why layout is invalidated

Source/core/layout/LayoutListMarker.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * Copyright (C) 2010 Daniel Bates (dbates@intudata.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 1060 matching lines @@
 {
     Document& document = item->document();
     LayoutListMarker* renderer = new LayoutListMarker(item);
     renderer->setDocumentForAnonymous(&document);
     return renderer;
 }
 
 void LayoutListMarker::styleWillChange(StyleDifference diff, const LayoutStyle& newStyle)
 {
     if (style() && (newStyle.listStylePosition() != style()->listStylePosition() || newStyle.listStyleType() != style()->listStyleType()))
-        setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation();
+        setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(LayoutInvalidationReason::StyleChange);
 
     LayoutBox::styleWillChange(diff, newStyle);
 }
 
 void LayoutListMarker::styleDidChange(StyleDifference diff, const LayoutStyle* oldStyle)
 {
     LayoutBox::styleDidChange(diff, oldStyle);
 
     if (m_image != style()->listStyleImage()) {
         if (m_image)
@@ skipping 59 matching lines @@
     clearNeedsLayout();
 }
 
 void LayoutListMarker::imageChanged(WrappedImagePtr o, const IntRect*)
 {
     // A list marker can't have a background or border image, so no need to call the base class method.
     if (o != m_image->data())
         return;
 
     if (size() != m_image->imageSize(this, style()->effectiveZoom()) || m_image->errorOccurred())
-        setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation();
+        setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(LayoutInvalidationReason::ImageChanged);
     else
         setShouldDoFullPaintInvalidation();
 }
 
 void LayoutListMarker::updateMarginsAndContent()
 {
     updateContent();
     updateMargins();
 }
 
@@ skipping 469 matching lines @@
     if (style()) {
         // Reuse the current margins. Otherwise resetting the margins to initial values
         // would trigger unnecessary layout.
         newStyle->setMarginStart(style()->marginStart());
         newStyle->setMarginEnd(style()->marginRight());
     }
     setStyle(newStyle.release());
 }
 
 } // namespace blink