Disable scroll anchoring when in printing mode

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

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
@@ skipping 533 matching lines @@
 }
 
 void LocalFrame::setPrinting(bool printing,
                              const FloatSize& pageSize,
                              const FloatSize& originalPageSize,
                              float maximumShrinkRatio) {
   // In setting printing, we should not validate resources already cached for
   // the document.  See https://bugs.webkit.org/show_bug.cgi?id=43704
   ResourceCacheValidationSuppressor validationSuppressor(document()->fetcher());
 
-  document()->setPrinting(printing);
+  document()->setPrinting(printing ? Document::Printing
+                                   : Document::FinishingPrinting);
   view()->adjustMediaTypeForPrinting(printing);
 
   if (shouldUsePrintingLayout()) {
     view()->forceLayoutForPagination(pageSize, originalPageSize,
                                      maximumShrinkRatio);
   } else {
     if (LayoutView* layoutView = view()->layoutView()) {
       layoutView->setPreferredLogicalWidthsDirty();
       layoutView->setNeedsLayout(LayoutInvalidationReason::PrintingChanged);
       layoutView->setShouldDoFullPaintInvalidationForViewAndAllDescendants();
     }
     view()->layout();
     view()->adjustViewSize();
   }
 
   // Subframes of the one we're printing don't lay out to the page size.
   for (Frame* child = tree().firstChild(); child;
        child = child->tree().nextSibling()) {
     if (child->isLocalFrame())
       toLocalFrame(child)->setPrinting(printing, FloatSize(), FloatSize(), 0);
   }
+
+  if (!printing)
+    document()->setPrinting(Document::NotPrinting);
 }
 
 bool LocalFrame::shouldUsePrintingLayout() const {
   // Only top frame being printed should be fit to page size.
   // Subframes should be constrained by parents only.
   return document()->printing() &&
          (!tree().parent() || !tree().parent()->isLocalFrame() ||
           !toLocalFrame(tree().parent())->document()->printing());
 }
 
@@ skipping 312 matching lines @@
   if (m_frame && m_frame->client() && m_frame->client()->frameBlameContext())
     m_frame->client()->frameBlameContext()->Enter();
 }
 
 ScopedFrameBlamer::~ScopedFrameBlamer() {
   if (m_frame && m_frame->client() && m_frame->client()->frameBlameContext())
     m_frame->client()->frameBlameContext()->Leave();
 }
 
 }  // namespace blink