Reland of Add StyleDifference::needsVisualRectUpdate

third_party/WebKit/Source/core/style/StyleDifference.cpp

 // Copyright 2017 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.
 
 #include "core/style/StyleDifference.h"
 
 namespace blink {
 
 std::ostream& operator<<(std::ostream& out, const StyleDifference& diff) {
   out << "StyleDifference{layoutType=";
@@ skipping 23 matching lines @@
       break;
     case StyleDifference::PaintInvalidationSubtree:
       out << "PaintInvalidationSubtree";
       break;
     default:
       NOTREACHED();
       break;
   }
 
   out << ", recomputeOverflow=" << diff.m_recomputeOverflow;
+  out << ", visualRectUpdate=" << diff.m_visualRectUpdate;
 
   out << ", propertySpecificDifferences=";
   int diffCount = 0;
   for (int i = 0; i < StyleDifference::kPropertyDifferenceCount; i++) {
     unsigned bitTest = 1 << i;
     if (diff.m_propertySpecificDifferences & bitTest) {
       if (diffCount++ > 0)
         out << "|";
       switch (bitTest) {
         case StyleDifference::TransformChanged:
@@ skipping 24 matching lines @@
     }
   }
 
   out << ", scrollAnchorDisablingPropertyChanged="
       << diff.m_scrollAnchorDisablingPropertyChanged;
 
   return out << "}";
 }
 
 }  // namespace blink