Check paint offset change after updatePaintOffsetTransform

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
@@ skipping 1686 matching lines @@
 
   int screenArea = 0;
   if (!screenRect.isEmpty() && isVisible)
     screenArea = (screenRect.width() * screenRect.height()).toInt();
   return ResourcePriority(
       isVisible ? ResourcePriority::Visible : ResourcePriority::NotVisible,
       screenArea);
 }
 
 void LayoutBox::locationChanged() {
-  // The location may change because of layout of other objects. Should check
-  // this object for paint invalidation.
-  if (!needsLayout())
+  // The location may change because of layout of other objects. Should update
+  // paint properties and check for paint invalidation.
+  if (!needsLayout()) {
     setMayNeedPaintInvalidation();
+    setNeedsPaintPropertyUpdate();
+  }
 }
 
 void LayoutBox::sizeChanged() {
   // The size may change because of layout of other objects. Should check this
   // object for paint invalidation.
   if (!needsLayout())
     setMayNeedPaintInvalidation();
 
   if (node() && node()->isElementNode()) {
     Element& element = toElement(*node());
@@ skipping 3993 matching lines @@
     block->adjustChildDebugRect(rect);
 
   return rect;
 }
 
 bool LayoutBox::shouldClipOverflow() const {
   return hasOverflowClip() || styleRef().containsPaint() || hasControlClip();
 }
 
 }  // namespace blink