Add RenderObject::needsResizeLayout

Source/core/rendering/RenderBox.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 1457 matching lines @@
 
     if (allMaskImagesLoaded) {
         paintFillLayers(paintInfo, Color::transparent, style()->maskLayers(), paintRect, BackgroundBleedNone, compositeOp);
         paintNinePieceImage(paintInfo.context, paintRect, style(), style()->maskBoxImage(), compositeOp);
     }
 
     if (pushTransparencyLayer)
         paintInfo.context->endLayer();
 }
 
+bool RenderBox::tryLayoutDoingResizeOnly()
+{
+    LayoutRectRecorder recorder(*this);
+    LayoutUnit oldLogicalWidth = logicalWidth();
+    updateLogicalWidth();
+    // If logical width changed, we still need full layout.
+    if (oldLogicalWidth != logicalWidth())
+        return false;
+    updateLogicalHeight();
+    return true;
+}
+
 LayoutRect RenderBox::maskClipRect()
 {
     const NinePieceImage& maskBoxImage = style()->maskBoxImage();
     if (maskBoxImage.image()) {
         LayoutRect borderImageRect = borderBoxRect();
 
         // Apply outsets to the border box.
         borderImageRect.expand(style()->maskBoxImageOutsets());
         return borderImageRect;
     }
@@ skipping 3202 matching lines @@
         return 0;
 
     if (!layoutState && !flowThreadContainingBlock())
         return 0;
 
     RenderBlock* containerBlock = containingBlock();
     return containerBlock->offsetFromLogicalTopOfFirstPage() + logicalTop();
 }
 
 } // namespace WebCore