Disallow cast/implicit conversion from LayoutUnit to int/unsigned

third_party/WebKit/Source/core/layout/LayoutBox.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 742 matching lines @@
 {
     if (!size().isEmpty())
         rects.append(LayoutRect(layerOffset, size()));
 }
 
 int LayoutBox::reflectionOffset() const
 {
     if (!style()->boxReflect())
         return 0;
     if (style()->boxReflect()->direction() == ReflectionLeft || style()->boxReflect()->direction() == ReflectionRight)
-        return valueForLength(style()->boxReflect()->offset(), borderBoxRect().width());
-    return valueForLength(style()->boxReflect()->offset(), borderBoxRect().height());
+        return valueForLength(style()->boxReflect()->offset(), borderBoxRect().width()).toInt();
+    return valueForLength(style()->boxReflect()->offset(), borderBoxRect().height()).toInt();
 }
 
 LayoutRect LayoutBox::reflectedRect(const LayoutRect& r) const
 {
     if (!style()->boxReflect())
         return LayoutRect();
 
     LayoutRect box = borderBoxRect();
     LayoutRect result = r;
     switch (style()->boxReflect()->direction()) {
@@ skipping 776 matching lines @@
         isVisible = viewBounds.contains(objectBounds);
 
     LayoutRect screenRect;
     if (!objectBounds.isEmpty()) {
         screenRect = viewBounds;
         screenRect.intersect(objectBounds);
     }
 
     int screenArea = 0;
     if (!screenRect.isEmpty() && isVisible)
-        screenArea = static_cast<uint32_t>(screenRect.width() * screenRect.height());
+        screenArea = (screenRect.width() * screenRect.height()).toInt();
     return ResourcePriority(isVisible ? ResourcePriority::Visible : ResourcePriority::NotVisible, screenArea);
 }
 
 void LayoutBox::frameRectChanged()
 {
     if (node() && node()->isElementNode()) {
         Element& element = toElement(*node());
         element.setNeedsResizeObserverUpdate();
     }
     // The frame rect may change because of layout of other objects.
@@ skipping 3259 matching lines @@
         m_rareData->m_snapAreas->remove(&snapArea);
     }
 }
 
 SnapAreaSet* LayoutBox::snapAreas() const
 {
     return m_rareData ? m_rareData->m_snapAreas.get() : nullptr;
 }
 
 } // namespace blink