Avoid clearing a page's layout overflow after paginated layout

third_party/WebKit/Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 3494 matching lines @@
                                        ? updatedDocumentRect.maxX()
                                        : updatedDocumentRect.maxY();
       LayoutUnit clippedLogicalLeft;
       if (!layoutView->style()->isLeftToRightDirection())
         clippedLogicalLeft = LayoutUnit(docLogicalRight - pageLogicalWidth);
       LayoutRect overflow(clippedLogicalLeft, docLogicalTop,
                           LayoutUnit(pageLogicalWidth), docLogicalHeight);
 
       if (!horizontalWritingMode)
         overflow = overflow.transposedRect();
+      adjustViewSizeAndLayout();
+      // This is how we clip in case we overflow again.
       layoutView->clearLayoutOverflow();
-      layoutView->addLayoutOverflow(
-          overflow);  // This is how we clip in case we overflow again.
+      layoutView->addLayoutOverflow(overflow);
+      return;
     }
   }
 
   adjustViewSizeAndLayout();
 }
 
 IntRect FrameView::convertFromLayoutItem(
     const LayoutItem& layoutItem,
     const IntRect& layoutObjectRect) const {
   // Convert from page ("absolute") to FrameView coordinates.
@@ skipping 1729 matching lines @@
 void FrameView::setAnimationHost(
     std::unique_ptr<CompositorAnimationHost> host) {
   m_animationHost = std::move(host);
 }
 
 LayoutUnit FrameView::caretWidth() const {
   return LayoutUnit(getHostWindow()->windowToViewportScalar(1));
 }
 
 }  // namespace blink